Five killed in Afghan blast

The attack comes days after Afghanistan set an October date for presidential polls and coincides with the launch of a disarmament programme in the prosperous city, which is controlled by anti-Taliban fighters and warlord governor Ismael Khan.

The explosion occurred at 9:30 am (0500 GMT) in front of the local police station in the Charsu area of the provincial capital some 625 kilometers (390 miles) west of Kabul, police chief Ziauddin Muhmoodi told AFP.

"The time bomb which was placed in a rubbish bin exploded and martyred five and injured 21" Muhmoodi said.

The bomb was placed in front of shops, the second floor of which is the local police station, in the midst of a crowded area.

"One police officer was also among the 21 injured," the police chief said.

United Nations spokesman Manoel de Almeida e Silva confirmed the blast had taken place and said it happened around five kilometers away from the disarmament ceremony which was being attended by high-ranking provincial officials and US-led coalition representatives.