(CNN)Nine people in Rhode Island’s capital were injured in a shooting Thursday, Providence Police Chief Hugh Clement said during a news conference.Three victims are “very seriously injured, maybe critically,” Clement said.Only one patient was taken to the Rhode Island Hospital by ambulance while the rest arrived in private vehicles, according to Clement.Police responded around 6:47 p.m. ET to reports of shots fired at a home, according to Clement.Clement said the assailant vehicle pulled up outside a home and the occupants began shooting. Those at the home returned fire, according to the chief.The people involved in the shooting are known to police and are part of two feuding groups, Clement said. The chief added that officers were sent to the hospital for security because of the possibility that victims from opposing groups were there.Clement said the ages of those involved range from 19 to 25.Several dozen shots were fired in the incident, he said.“This was not random. It was targeted at that address,” he told reporters.No arrests have been made at this point and the investigation is ongoing, the chief said.Clement said there were at least four or five guns involved in the shooting.