Angry protesters barricaded roads with burning tyres and rocks in Zimbabwe on Monday after the government more than doubled the price of fuel in a bid to improve supplies as the country battles its worst gasoline shortages in a decade.

Protesters turned back drivers and blocked buses from carrying passengers in Zimbabwe’s two main cities of Harare and Bulawayo as the main labour federation called for three-day nationwide strike.

Soldiers were deployed at a shopping centre in Bulawayo’s township of Entumbane where protesters looted shops.

Demonstrators in the second city had attacked minibuses heading to the city centre and used burning tyres and stones to block the main routes into town while some schools were turning away pupils fearing for their safety.

Shops closed in downtown Harare as riot police patrolled the streets and a military helicopter flew over the capital.