One more Tesla executive has left the electric car company, with the departure of Autopilot chief engineer Jim Keller to Intel, according to Bloomberg. Keller joined Tesla two years ago with a background in chip development, and had his last day at his post with the electric car maker last Tuesday, the report said.

The Palo Alto, California-based company has had a challenging first quarter. It posted its biggest quarterly loss yet in February, and another Autopilot-related fatality occurred in March, this time involving a Model X. Meanwhile, production of the Model 3 was temporarily halted in April to address bottlenecks.

Keller’s Autopilot responsibilities, which previously included low-voltage hardware, Autopilot software and infotainment, will now be divided. Pete Bannon, who has been at the company for more than two years, will be in charge of Autopilot hardware, while Tesla director of AI and Autopilot Vision Andrej Karpathy will be responsible for Autopilot software.

Last month, the development of autonomous cars also took a hit with the fatality of a pedestrian involving an Uber test vehicle, which led to the suspension of test programmes in Arizona. The ride-sharing company reached a settlement with the family of the victim, and later stated that it still has faith in the prospects of autonomous vehicles.