WASHINGTON (Reuters) – The U.S. National Highway Traffic Safety Administration (NHTSA) said late on Tuesday it will investigate a fatal Dec. 29 Tesla Inc (TSLA.O) crash in Los Angeles that killed two people.

The auto safety regulator said earlier this month it had opened a probe into a 12th Tesla crash that may be tied to the vehicle’s advanced Autopilot driver assistance system after a Tesla Model 3 rear-ended a parked police car in Connecticut.

NHTSA’s special crash investigation program will investigate the crash in Los Angeles of a 2016 Tesla. According to local news reports, the vehicle was speeding and ran a red light after exiting a freeway and crashed into another vehicle, killing its two occupants. The NHTSA did not say if autopilot was suspected in the Los Angeles crash.