Chennai, March 14 - Popular Tamil television actor Sai Prashanth has allegedly committed suicide at his residence here on Sunday, police said. According to police sources, Prashanth mixed poison in his drink. "The reason behind the suicide is not clear. We think it could be loneliness," a police official told IANS. Prashanth's body has been taken to Kilpauk Medical College for post-mortem. After divorcing his first wife, Prashanth re-married three months ago. Known for working in serials such as "Annamalai", "Selvi" and "Arasi", he had also starred in a few Tamil films such as "Neram", "Thegidi" and "Vadacurry". Prashanth started off his career as a video jockey and hosted popular show, "Dil Dil Manadhil".