Actor and physician Sethu passed away on March 26 due to cardiac arrest. He was aged 36, and has co-starred with fellow actor and friend Santhanam in three films, starting from Kanna Laddu Thinna Aasaiya, Vaaliba Raja and Sakka Podu Podu Raja.
Santhanam tweeted, "Totally shocked and depressed on the demise of my dear friend Dr.Sethu.. May his soul rest in peace."
Sethu also runs the skin clinic Zi Clinic. The entire Tamil film industry is in shock, as the news of the young actor's death was an unexpected one. Celebrities pour in their condolences on social media.