Parents raise doubts over death of teenaged son

Parents of a teenaged boy have raised doubts over the death of their son, found hanging in the residence of his house owner, a college principal, in Tirunelveli.    Ajay Grattus, a XIth standard student, had allegedly committed suicide by hanging himself from the ceiling of a room, used as the personal library of the principal of an engineering college, at Vennarapettai, 150 km from here last night, police said.The boy was staying in a room on the upstairs of the house of the principal.    The parents of the boy have raised doubts about his death, saying the room was found washed when they had gone there. Police said they were enquiring into the doubts raised by the parents.