Swedish police say two car bombs have shattered dozens of windows in a multiethnic district of Malmo, Sweden's third largest city.

Police spokeswoman Linda Pleym says no one was injured by Saturday's pre-dawn explosions in Rosengaard, a district dominated by immigrants from Iraq, Kosovo, Bosnia and Lebanon. One car bomb exploded at the foot of a building, the other in a parking lot nearby.

It was unclear who was behind the two explosions and if they were connected. No arrests were immediately made.

The blasts were the latest in a series that has rocked the southern Sweden city in recent months. Earlier this year, a downtown building that houses a court house, police and prosecution offices and a detention center was twice targeted. No one was injured.