Some law enforcement drones are dropping out of the sky

The U.K.’s Civil Aviation Authority is cautioning police departments and other emergency services to suspend operations of a specific drone model after some of the devices lost power unexpectedly and fell while in flight.

The Civil Aviation Authority (CAA) safety warning applies to DJI Matrice 200 series drones, used by some emergency services in the U.K. The failures were first reported by West Midlands police department, though law enforcement in Norfolk, Devon and Cornwall also uses DJI drones. Devon and Cornwall have grounded two affected drones out of their fleet of 20, according to the BBC.

According to the CAA, “A small number of incidents have been recently reported where the aircraft has suffered a complete loss of power during flight, despite indications that there was sufficient battery time still remaining.” No injuries have been reported, despite “immediate loss of lift with the remote pilot unable to control its subsequent flight path.”

While no reports have surfaced in the U.S. so far, a study by Bard College noted that 61 U.S. public safety agencies (law enforcement, fire departments, EMS, etc.) use the specific model of Mavic drone affected. Collectively, drone models by DJI dominate the space, though the Matrice is not the most popular model.

The manufacturer has responded to the reports, urging Matrice operators to push a firmware update that resolves the issue. “When prompted on the DJI Pilot App, we recommend all customers to connect to the internet on the app or DJI Assistant 2 and update the firmware for their aircraft and all batteries to ensure a safe flight with their drone,” the company wrote in a product warning.

DJI faced a similar issue last year when some of its DJI Spark consumer-grade drones suddenly lost power and fell from the sky.