Stockholm, Sweden (CNN) -- Authorities on Sunday were investigating whether a pair of new shootings in a southern Swedish city were connected to a single unknown gunman who is targeting immigrants living in the city.
The first shooting occurred late Saturday when someone fired a bullet into a small store in central Malmo, said police spokesman Calle Persson. The second shooting was reported around midnight, after a family alerted police to a window being shot, he said.
Both the shopkeeper and the family are immigrants living in the city. Nobody was injured in the most recent incidents.
"It is still too early to say whether this was the same gunman that we suspect for the other shootings," Persson added.
Still, the suspected serial shooter is keeping edge -- and there are no suspects.
Police say at least 15 shootings in Malmo over the last year may be linked to the one shooter, believed to be using a handgun. Sydsvenskan, a respected regional newspaper citing police sources, reported that at least five shootings can now be tied to the same weapon.
The shootings have all been well planned, under the protection of darkness and at places familiar to the shooter, according to CNN's Swedish affiliate TV4, citing police.
Several of the shootings in Malmo have occured in recent weeks, police say. However, the first in the series is believed to be the October 2009 fatal shooting of a 20-year-old woman, said Malmo police superintendent Hans Nilsson told CNN.
CNN
