Investigators and families began the search for answers after Friday night's pipeline blast killed 79 people in Tlahuelilpan, Hidalgo state. Distraught relatives continued to gather at the site of the explosion on Sunday. The area was cordoned off by security forces while forensic experts photograph the remains of charred bodies. A survey of the site showed the ditch where pipeline once lay... Еще completely destroyed. At the town's cultural centre relatives of those caught up in the fire search for their loved ones names on lists. Officials were berated for withholding bodies and failing to publish complete information. Pemex, Mexico's state-owned petroleum company, said the fire was caused by illegal tapping. It is believed that thieves drilled through the Tula-Tuxpan pipeline causing a large jet of fuel to rise into the air. Once the news of the ruptured pipeline spread, local people rushed to fill their containers and were engulfed in the inferno.