Three persons were burnt to death in a blaze that gutted over 300 hutments in Sikanderpur village on Mehrauli-Gurgaon Road this morning. The scene of the incident was just metres away from some residential blocks of DLF Phase I. No damage was reported from the colony. According to eyewitnesses, the fire began at around 10.30 am when an LPG cylinder exploded inside one of the jhuggis.