Stone-throwing youths attack Stockholm cops

"The commotion started when a patrol tried to stop and investigate a vehicle," Towe Hägg, Stockholm police spokeswoman, told news agency TT. "Youths started throwing rocks at the police car."

Young people in the district set fire to several cars as well as the city's community centre. The cars were left to burn and police extinguished the fire in the community centre.

By 2am Rinkeby was again calm, although police remained on the scene along with six fire trucks and an ambulance.

"We're sitting tight for a while to make sure the trouble doesn't blaze up again," said firefighter Jarmo Hokkanen Carlsten at the time.

Rinkeby, a district of Västerort in Stockholm, was one of several areas which saw violent unrest in 2013, with up to 30 fires a night and several police injured by stones.