A car bomb hit a Pakistani refugee camp Thursday, killing 13 people including women and children, raising further fears for the security of a May general election in the nuclear-armed state

A car bomb hit a Pakistani refugee camp Thursday, killing 13 people including women and children, raising further fears for the security of a May general election in the nuclear-armed state.
  
More than 30 other people were wounded when the bomb exploded in Jalozai, the largest refugee camp in Pakistan, as scores of people queued for rations handed out by a local charity in partnership with the United Nations and USAID.
  
Jalozai is home to tens of thousands of displaced people from the tribal belt, a stronghold of the Taliban and Al-Qaeda-linked militants, on the Afghan border and is close to the main northwestern city of Peshawar.
  
There was no immediate claim of responsibility but officials linked the attack to fighting in Khyber district, where the military has stepped up an offensive against Taliban and local militia, and from where most camp residents have fled.
  
"The bomb exploded in a car parked near the administration office where refugees had lined up to get rations and new arrivals were being registered," said camp police official Fuad Khan.
  
District police chief Mohammad Hussain said the bomb was detonated on a timer, and carried up to 35 kilograms of explosive and mortar shells.