At least 76 people have been killed in Bangladesh amid worsening clashes between police and anti-government protesters.

Axar.az reports that the unrest comes as student leaders have declared a campaign of civil disobedience to demand that Prime Minister Sheikh Hasina step down.

Thirteen police officers were killed when thousands of people attacked a police station in the district of Sirajganj, police said.

The student protest started with a demand to abolish quotas in civil service jobs last month, but has now turned into a wider anti-government movement.

Both police and some supporters of the governing party were seen shooting at anti-government protesters with live ammunition. Police also used tear gas and rubber bullets.

The total death toll since the protest movement began in July now stands at over 270.