The two dogs, which according to police were pit bulls, initially went after a third dog, which was also injured.
When the owners attempted the separate the dogs, they were subsequently bitten by the pit bulls.
“Then these pit bulls bit two other people. These dogs then continued to hunt other people and it remains unclear if anyone else may have been bitten,” Gert Fredlin of Stockholm’s western district police told the TT news agency.
Police were called shortly after 3pm to intervene in the canine brawl. Two of the people injured were taken to hospital by ambulance, while the two others, who had less-serious wounds, were driven by the police.
According to initial reports the victims had been bitten in the torso and legs.
The dogs were eventually shot and the owner of the pit bulls is now suspected for having contributed to the bodily harm of another.
“If someone doesn’t have their dogs on a leash that is basically a breach of laws keeping public order; if they then attack people and the owner can’t control the dogs then it becomes contributing to the bodily harm of another,” said Fredlin.