AUSTIN, Texas — Three young people were in custody following at least 10 random weekend shootings in Austin, Texas, that left four people injured, city officials said.

Driving around the city in stolen vehicles, at least two of the suspects fired at two fire stations, apartment buildings and houses during a string of robberies and shootings from Saturday afternoon to Sunday morning, Austin Police Chief Lisa Davis said Sunday.

Two boys, ages 15 and 17, were apprehended after they were pulled over in a stolen car and attempted to run. A third person who had been in the car also ran and was detained Sunday night at a gas station in Manor, about 15 miles northeast of Austin. Police said the person was a juvenile, but did not provide an age or any other details.

Davis said earlier that the firearm that was used in the shootings had earlier been stolen by the 15-year old, and that the 17-year old was wanted for a separate firearm theft.

Four victims were taken to hospitals, including one with critical injuries, officials said.

The suspects stole at least four vehicles as they traveled around the city, Davis said.

“We don’t have any specific motive that has been identified. In fact, these actions appear to be random,” Mayor Kirk Watson said.