The U.S. National Highway Traffic Safety Administration (NHTSA) said on Wednesday it was launching an investigation into the Dec. 29 crash of a Tesla Model 3 that left a passenger dead after the vehicle collided with a parked fire truck in Indiana.

The crash is the 14th involving Tesla that NHTSA's special crash investigation program has taken up in which it suspects the company's so-called Autopilot or other advanced driver assistance system was in use.

It is the third Tesla crash NHTSA has said it was investigating in recent weeks. Autopilot had been engaged in at least three Tesla vehicles that were involved in fatal U.S. crashes since 2016. Tesla did not immediately comment.

NHTSA is also probing another Dec. 29 fatal crash of a Model S Tesla in Gardena, California. In that incident, the vehicle exited the 91 Freeway, ran a red light and struck a 2006 Honda Civic, killing its two occupants.