"Happy about the granting of bail (although conditional) by the honourable court to Kanhaiya & pleased that he's been released from prison," Sinha said in a tweet.
"Hope, wish and pray that he will prove himself worthy of the support that he received from everyone who felt that he was wronged," he said in another tweet.
The actor-turned BJP MP later told PTI he was impressed with the student leader's speech in Jawaharlal Nehru University after his release from Tihar jail.
He said he spoke in favour of Kanhaiya because he did not find the young man speaking anything against the country and also because he was a native of Bihar.
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"Bihar is my strength and Bihar is also my weakness," Sinha added.
Kanhaiya Kumar, who was arrested on sedition charge on February 12 and released on March 3 on an interim bail, is a native of Begusarai district of Bihar.
Shatrughan Sinha also presented a book "Anything but Khamoosh" written on him by Mumbai-based scribe Bharti Pradhan to Bihar Governor Ramnath Kovind and invited him for its launch function at Patna tentatively in the third week of March.
"I am happy to present first copy of the book to first citizen of the state," Sinha said on presenting book to the Governor.
The BJP leader said he has already invited Chief Minister Nitish Kumar for the book launch event in Patna.
"I will also request acting Chief Justice of the Patna High Court Iqbal Ahmad Ansari to come for the function," he said.
The Bollywood actor-turned-BJP Parliamentarian hailed Narendra Modi government decision to award 'Dada Saheb Phalke' award to legendary actor Manoj Kumar.
"It's a wise and timely decision to give Dada Saheb Phalke award to Manoj Kumar," Sinha, who has worked with Kumar in the film "Kranti", said.