At least four people were killed on the fourth day of rioting in Bangladesh on Sunday after an Islamist opposition leader was sentenced to death for war crimes, police said.

Soldiers were deployed after protesters torched police posts, a railway station and other government facilities in the northern district of Bogra during a strike called by the opposition.

Protesters and police exchanged gunfire that left four people dead in the region 230 kilometres north-west of Dhaka, police officer Abdul Waris said.

He said thousands of activists of the Bangladesh Jamaat-e-Islami party attacked public property and offices of the ruling Awami League.

The rioting began after Jamaat-e-Islami vice-president Delwar Hossain Sayedee was convicted on Thursday of murder, looting, arson, rape during the country’s 1971 independence war.

European Union foreign policy chief Catherine Ashton called on “all political actors in the country to exercise maximum restraint, use their influence to put an end to these violent incidents, and do all in their power to avoid exacerbating the divisions in society, which have been brought to a head by recent events.”