Islamabad, Oct 31 (IANS) Ten passengers were charred to death and 30 injured when a train from Karachi to Rawalpindi caught fire in Pakistan's east Punjab province on Thursday, Geo news reported.The passenger train, Tezgam, caught fire near the city area of Liaquatpur, a Pakistan Railways official confirmed. The fire was caused when a gas cylinder being carried by a passenger exploded, he said.According to details, the passengers were cooking breakfast when the blast occurred. Two adjoining coaches were engulfed in the raging fire. --IANS dpb/in