Police have arrested two people in connection with at least 10 shootings that took place in Austin, Texas, over the weekend.

At least four people have been shot, Austin Police Chief Lisa Davis said Sunday. One person sustained a “serious injury,” while the others have minor injuries, she added.

Two suspects are now in custody, while a third is still “at large,” the Austin Police Department said in a Sunday afternoon update. Officials also lifted a shelter-in-place order for the South Austin area.

The shootings, which took place late Saturday and Sunday, appear to be “random” with “no specific motive,” according to Davis. She described two of the suspects as males in their late teens.

Davis said the suspects have used several different cars, including a black or dark blue Hyundai, a gold Hyundai sedan, a silver Mazda four-door and a white Kia Optima.

“I want to remind people, do not leave their cars unlocked. What we are seeing are these cars are being stolen. Do not leave your keys in the vehicle or your key fobs in the vehicle,” she said.

Two of the shootings took place at Austin Fire Department stations.

“In both [Austin Fire Department] station shootings, no firefighters were injured with only minor damage reported to at least one fire apparatus and both fire stations,” the Austin Firefighters Association said in a statement.

The city’s firefighters remain “fully staffed, operational, and responding to multiple shootings across the city,” according to the association.

Austin Mayor Kirk Watson has asked residents to “remain vigilant” and report any suspicious activity to police.

“If you see something suspicious, call 911 immediately. Stay safe,” Davis added.

This is a breaking news story. Check back for updates.