THIRUVANANTHAPURAM: A woman allegedly poisoned her three children and then committed suicide on Thursday. The incident happened at Venjaramoodu in the capital city. The three children are in a serious condition. The dead has been identified as Sreeja (26) of Kunnumukal Thadatharikathu House. She was an employee of a textile shop in the town. Her children--Jyothika (9), Jyothi (7) and Abhinav aged three-and-a half are under treatment.