AIADMK deputy general secretary T T V Dinakaran said Muthu Krishnan's death at Delhi's Jawaharlal Nehru University and his references to "inequality" has sent "shock waves" across the state
Referring to Krishnan's links to a movement in support of "justice" for deceased Dalit research scholar Rohit Vemula in Hyderabad last year, Dinakaran said, "There are strong doubts if he really committed suicide, considering he was strong."
"Therefore, Delhi Chief Minister Arvind Kejriwal should take special interest and order for a proper probe and bring the facts to light. The culprits should not be spared at any cost," he said in a statement.
DMK working president and Leader of Opposition M K Stalin also expressed concern over Krishnan's death.
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He questioned the suicide angle behind the student's death and cited the statement of the victim's father that his son could not have taken the extreme step.
"The Delhi police cannot brush aside the fact that Krishnan was one of those who had sought justice for Vemula, and his Facebook post on inequality also cannot be ignored," he said.
Stalin also urged Chief Minister K Palaniswami to take up the matter with Prime Minister Narendra Modi.
Krishnan, hailing from Salem, was found hanging in his University's hostel room.
JNU Students Union (JNUSU) has alleged he was targeted for his association with the movement seeking justice for Vemula and the resultant depression made him take the extreme step.
While Krishnan has not left any suicide note, a recent Facebook post by him criticising "discriminatory" admission policies in JNU is being widely circulated on social media.
"When equality is denied everything is denied," he wrote in his March 10 Facebook post.
The police, on the other hand, has been maintaining that no prima facie evidence has been found indicating the JNU administration's role into the issue.
The CPI, the CPI(M) and the BJP also expressed concern over the student's death and sought a probe into it.