A deputy Afghan provincial¹ governor has been killed in a suicide attack while travelling in car, police say.

阿富汗警方称，一位代理省长乘车旅行时被自杀式炸弹袭击致死。

Mohammad Kazim Allahyar, his son and four others died in the blast in Ghazni city, police said.

There was a large blast as the bomber² struck one of the vehicles in the two-car convoy³（护送，护卫） , Ghazni police chief Zarawar Zahid told news agency AP.

This year has been Afghanistan's bloodiest⁴ since the US-led invasion of 2001.

Police said Mr Allahyar was driving to work at the time of the blast, which also killed his driver and three bodyguards⁵.

Eight other people, including pedestrians⁶（行人） , were injured in the blast.

Mr Allahyar had reportedly been in the job for seven years and survived a bombing attempt just two months ago.

One report said that the suicide bomber was on a motorcycle, another that the attacker was in a car.

Afghan government officials are often targeted by the Taliban and other militant⁷ groups for working with the government or international forces.