Several prominent celebrities took to social media to mourn the sudden demise of Tamil actor-comedian Vivek.
Expressing shock over the demise of Vivek, Rajinikanth tweeted saying his death has caused him a lot of pain.
Music Maestro AR Rahman, who worked in several films featuring the actor, wrote he can't believe Vivek is no more.
South star Prakash Raj too took to social media & expressed his grief.
'Rest in peace Vivek sir', actor Prithviraj Sukumaran wrote on Twitter.
The 59-year-old actor who was known for films like Sivaji, Run, Saamy and Perazhagan, among many others passed away after suffering a heart attack at a hospital in Chennai on Saturday.