New Delhi India'stopcourtaffirmed people's right to free speech in cyberspace Tuesday by striking down a provision that had called for imprisoning people who send "offensive" messages by computer or cellphone.

The provision, known as Section 66A of the 2008 Information Technology Act, had made sending such messages a crime punishable by up to three years in prison.

In its ruling, theSupremeCourtsaid the provision was "clearly vague" in not clarifying what should be construed as offensive. It also said the provision violates people's freedom of speech and their right to share information.

"The public's right to know is directly affected," the judges said in deeming the provision unconstitutional.

A law student who filed the challenge in 2012, Shreya Singhal, applauded thecourt'srejection of a provision she said was "grossly offensive to our rights, our freedom of speech and expression."

"Today theSupremeCourthas upheld that, they have supported our rights," Singhal said. "I am ecstatic."

The law has been invoked in at least 10 recent cases, most often involving criticism of political leaders.

In 2012, a chemistry professor and his neighbor in Kolkata were arrested for forwarding a cartoon that made fun of West Bengal's top elected official, Mamata Banerjee.

Police arrested a man last year for saying on Facebook that Prime Minister Narendra Modi, then still a candidate, would start a holocaust inIndiaif elected to office.

And last week, police in the northern state of Uttar Pradesh arrested a teenage student for posting comments on Facebook he attributed to a top state minister.

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India's top court affirms people's right to free speech on Internet