In Attapur district of Hyderabad six persons including four workers died in the wee hours of Wednesday.  They were locked inside an establishment of their work premises and were charred to death as  fire broke out at 5.05 a.m. said the  police.  Police arrested the owners of the shop named Triwheel Enterprises that repairs some electronic items . “They had called two of their friends over, and all six of them had dinner together.   The fire may have taken place due to a short circuit, but we are yet to ascertain the exact cause of the incident,” he told The Hindu.  Police said four workers were lying next to the door as they would have tried to escape and that the other two bodies were found nearby.  Police said  four workers were lying just next to the door as they would have tried to escape and that the other two bodies were found nearby.  Police said the four workers belonged to other states and bodies of all victims were burnt beyond recognition.  It has to be identified through DNA tests.