His phone was tapped without a warrant. The court let the recording in.
RM Malkani argued the illegal recording violated his right against self-incrimination. The Supreme Court said: it doesn't matter how you got it.
Admissible.
Even if stolen.
Illegally obtained.
RM Malkani argued the illegal recording violated his right against self-incrimination. The Supreme Court said: it doesn't matter how you got it.
Police tapped his phone without permission. He said it violated his rights. The Supreme Court said: evidence is evidence, even if stolen.
RM Malkani was a man on the other end of a wire he never knew existed. The police had attached a recording device — a small, black box, its metal casing cool and heavy — to his telephone line. No warrant. No court order. No permission from any authority. They listened to his conversations, the low hum of the wire carrying his voice into their machine. They recorded his words onto a spool of magnetic tape, and then used those recordings to build a case against him. When the trial began, Malkani's lawyers did what any defence lawyer would do: they asked the court to throw the recordings out. The police had broken the law to get them. The question that hung over the case was simple and devastating: Could a man be sent to prison based on evidence the police had no right to collect in the first place?
When the police listened in
The facts were not complicated. Malkani was accused of a crime. The police, believing he was guilty, decided to gather evidence by tapping his phone. They did not approach a magistrate for permission. They did not follow any procedure laid down by law. They simply attached a recording device to his telephone line and waited, the silence of the police station broken only by the faint crackle of the tape spooling.
What they heard — or what they claimed to have heard — became the centrepiece of the prosecution's case. The recorded conversations, the prosecution argued, showed Malkani's involvement in the crime. The trial court admitted the recordings as evidence. Malkani was convicted.
He appealed. His argument was not that the conversations were innocent. His argument was that the recordings should never have been allowed into the courtroom at all.
The constitutional challenge
Malkani's lawyers raised two constitutional provisions. Article 20(3) of the Constitution — the right against self-incrimination, which holds that a person accused of an offence cannot be forced to be a witness against themselves — says no person accused of an offence shall be compelled to be a witness against themselves. The police had recorded Malkani without his knowledge. He had not voluntarily given them his words. They had taken them. That, the defence argued, was compulsion — the state had forced him to incriminate himself.
Article 21 — the right to life and personal liberty, which says no person can be deprived of life or liberty except by procedure established by law — says that no person shall be deprived of their life or personal liberty except according to procedure established by law. The police had no procedure for tapping his phone. They had simply done it. That, the defence argued, meant the entire exercise was illegal — and anything that came out of it should be thrown out.
The prosecution had a different view. The conversation was voluntary, they said. Malkani had chosen to speak on the phone. No one had put a gun to his head. The fact that he did not know he was being recorded did not make his words any less his own. And as for the illegality of the tap — well, that was a separate matter. The police could be punished for breaking the law. But the evidence itself? That was still evidence.
The Supreme Court said: it matters not how you get it
The Supreme Court did not mince words. In a hushed courtroom, the bench — seated behind polished wood, the air thick with the smell of old paper and dust — delivered its finding. It held that the recordings were admissible. The key finding was this: the conversation was voluntary. Malkani had not been compelled to speak. He had spoken freely, unaware that he was being recorded. Article 20(3) protects against compulsion — not against being caught.
The Court then turned to the bigger question: what about the illegal method of obtaining the evidence? Here, the bench reached back into common law tradition. It quoted an old English case, R. v. Leatham, where the court had said: "it matters not how you get it if you steal it even, it would be admissible in evidence." The words hung in the air, a stark pronouncement.
The Supreme Court adopted that principle. It held: "As long as it is not tainted by an inadmissible confession of guilt, evidence even if it is illegally obtained is admissible."
The logic was stark. The test for admissibility is relevance — does this piece of evidence help the court decide the case? If the answer is yes, the evidence comes in. How the police got it is a separate question. If they broke the law, they can be punished for that. But the evidence does not become inadmissible just because the method of obtaining it was illegal.
There was one important limit: the evidence must not be extracted under duress or compulsion. A forced confession — beaten out of an accused person — would still be inadmissible. But a voluntary conversation, recorded without permission? That was fair game.
The distinction that matters
The Court drew a line that has shaped Indian evidence law ever since. On one side: evidence obtained by illegal means but voluntarily given. On the other side: evidence obtained by compulsion, whether legal or illegal. The first kind is admissible. The second is not.
This is not the same as saying that police can break the law with impunity. The Court made clear that the illegality of the procurement could lead to separate penal action against the officers involved. But that is a matter between the state and its police. It does not affect the trial of the accused.
The reasoning is practical. If every piece of evidence obtained through an illegal search or an unauthorized wiretap were thrown out, guilty people would walk free — not because they were innocent, but because the police had been sloppy or overzealous. The law punishes the police for their sloppiness. It does not let the accused benefit from it.
Critics have called this approach dangerous. It gives the police an incentive to cut corners, they argue. If the evidence will be admitted anyway, why bother getting a warrant? The Court's answer, embedded in the judgment, is that the remedy for illegal police conduct is not to suppress evidence but to prosecute the officers. Whether that remedy has ever been effectively used is a different question.
What this means for every trial
The RM Malkani v State of Maharashtra judgment established a principle that still governs Indian courts today. When a lawyer objects to evidence on the ground that it was illegally obtained, the judge asks one question: is the evidence relevant? If it is, it stays. The objection goes to the conduct of the police, not to the admissibility of the evidence.
There is one exception that the Court itself carved out: if the evidence was obtained through an inadmissible confession — meaning a confession that was coerced or extracted under duress — then the illegality of the method does matter. But that is because the confession itself is inadmissible, not because of how it was obtained. The two rules run parallel: a coerced confession is always out, however it was obtained. A voluntary statement is always in, however it was obtained.
Consider a hypothetical: a police officer breaks into a man's home without a warrant and finds a stolen television. The man is charged with theft. His lawyer argues the television cannot be used as evidence because the search was illegal. Under the RM Malkani principle, the television would be admissible. The search was illegal, and the officer can be punished for it. But the television is still relevant evidence. The man cannot benefit from the officer's misconduct.
Now consider a different scenario: the same officer, instead of searching for a television, beats a confession out of the man. That confession is inadmissible — not because the beating was illegal, but because the confession itself was coerced. The two cases look similar on the surface, but the legal principle is entirely different. One is about the method of obtaining evidence. The other is about the voluntariness of the statement.
This distinction is the heart of the RM Malkani judgment. It is a distinction that every criminal lawyer must understand. When challenging evidence, the focus must be on whether the statement was voluntary. The legality of how it was obtained is almost never a winning argument on its own.
THE PLAY: When challenging evidence in a criminal trial, focus on whether the statement was voluntary — the legality of how it was obtained is almost never a winning argument on its own.
The Court ended where it began: with a man on the phone, unaware that anyone was listening, and a recording that would send him to prison. The wiretap was illegal. The evidence was not.