A bomb hit a passenger train in Pakistan’s restive southwest on Monday, killing at least six people and wounding more than 17 others

A bomb hit a passenger train in Pakistan's restive southwest on Monday, killing at least six people and wounding more than 17 others, officials said.
  
The device, apparently planted on the railway track, exploded when the train approached a station in Naseerabad district, around 250 kilometres (150 miles) southeast of Quetta, the capital of insurgency-hit Baluchistan province.
  
"It was a bomb blast, the target was the passenger train. At least six people have been killed," provincial home secretary Asad Gilani told AFP, adding that more than 17 others were wounded in the blast.
  
Zafar Shah Bukhari, a senior official in the area, confirmed the bomb attack and death toll. Bukhari said the Jaffar Express was travelling from Rawalpindi to Quetta.
  
"We have taken the dead bodies and injured to the nearby hospital," Bukhari said, adding that the condition of six of the injured was critical. The explosion derailed the train, Bukhari added.
  
The identity of those killed in the attack was yet not clear but Gilani said some security personnel were travelling in the train. "All those killed were men but women and children were among the wounded," Bukhari said.

Police and other security personnel cordoned off the area after the blast. An intelligence official told AFP bomb disposal experts were examining the site to determine the nature of the blast and check for any more devices.
  
Bukhari said one of the compartments of the passenger train was badly damaged due to the intensity of the explosion.
No group has yet claimed responsibility for the blast.