Unnikrishnan Nair CHENNAI: Homesickness and depression pushed the 22-year-old project assistant at IIT-Madras to self-immolate at the hockey ground on the institute campus on Thursday, police said, quoting from an 11-page suicide note recovered from his rented house in Velechery. The deceased has been identified as Unnikrishnan Nair, a native of Ernakulam. After completing his master’s degree in his home town, he came to Chennai three months ago and joined IIT-M as a project assistant. He moved into a three-bedroom apartment at Velachery, which is close to the institute, along with Anil from Kerala, a doctoral student at IIT-M, and a man from Thanjavur.