Ujjain : A 25-year-old labourer ended his life by jumping to death from the rooftop of the under construction building he used to work at Sethi Nagar here. The deceased was identified as Sajan Bairwa, a resident of Narwar village. According to the police Sajan allegedly jumped to death from the fifth floor of the building he used to work. Police said it was revealed that the deceased was a drug addict and was under trouble. His body was shifted to Civil Hospital for postmortem. Further investigation is on by Madhav Nagar police.