VICTORVILLE, Calif. — A 14-year-old boy pretending to be a sheriff’s deputy was arrested after an escapade in which he reportedly drove around in an SUV with flashing lights, initiated a traffic stop and announced phony investigations, the real sheriff’s officials said.

The unidentified teen was already on probation for an undisclosed offense. Investigators who searched his home Tuesday found counterfeit money, replica firearms, ballistic vests and other law enforcement related items, San Bernardino County sheriff’s officials said.

The investigation began Monday evening when deputies were called to a home in Victorville, a Mojave Desert city 25 miles north of San Bernardino. The caller said a person had pulled into the driveway in a white Explorer with red and blue lights flashing, though it had no markings indicating it was a law enforcement vehicle.

The SUV’s driver came to the door of the home wearing a holster with what appeared to be a firearm and told the occupants he was investigating a domestic disturbance, officials said.

When told there was no disturbance, the uniformed person tried to open the homeowner’s door, but it was locked. After a short confrontation with the occupants, he left in the Explorer.

Two other interactions were reported on Monday night in the same neighborhood, the sheriff’s report said:

A person believed to be the same boy pulled over a driver and, after getting her information, gave her a warning and let her go.

He turned on the SUV’s lights outside a home and when a 16-year-old occupant emerged told him he was investigating a domestic disturbance.

The Explorer was spotted on the road Tuesday by sheriff’s Sgt. Jeff Monroe, and the juvenile driver was arrested. The vehicle reportedly belongs to the 14-year-old’s great-grandmother, with whom he lives, according to spokeswoman Mara Rodriguez.

The boy was booked into High Desert Juvenile Detention Center.