Gunmen attacked employees of a Hungarian oil and gas company returning from work in north-west Pakistan on Thursday, killing two of them and abducting two others. Four soldiers guarding the convoy were also killed, a top official said. All those killed and seized in the incident in Kohat region were Pakistani nationals, said the area's top administrator, Khalid Umerzai. He said the victims were working for MOL Pakistan, a subsidiary of the MOL Group.