Amazon said Sunday it was pausing operations with Miami-based 21 Air, the cargo carrier that operated the Amazon-branded Boeing 767 that crashed at Miami International Airport last weekend, killing five people.

Amazon spokesperson Kelly Nantel said the company made the decision after supporting the investigation and reviewing the circumstances surrounding Flight 7598.

“After the tragic incident last weekend, we've spent time supporting the investigation and reviewing some of the surrounding circumstances, and we’ve decided to pause our operations with 21 Air, the operator of Flight 7598,” Nantel said.

The Amazon Prime Air flight overran Miami International Airport’s Runway 30 shortly before 2 p.m. on Sept. 6 while attempting to land. The Boeing 767-300 freighter struck vehicles on the ground after leaving the runway, killing five people and injuring five others.

The National Transportation Safety Board has recovered and analyzed the aircraft’s cockpit voice and flight data recorders. Preliminary findings show one pilot warned that the aircraft was traveling too fast during the approach. The aircraft touched down at a groundspeed of 158 knots, and the data indicates the crew briefly increased the throttles in a manner consistent with an attempted go-around before reducing them again. The NTSB said there was no indication that the speed brakes or thrust reversers were deployed.

Investigators have not yet determined what caused the crash. The NTSB has emphasized that its findings remain preliminary and could change as the investigation continues.

21 Air said it remains confident in its safety policies, procedures and training and will continue cooperating with the NTSB investigation. The company also said it remains focused on supporting the families and others affected by the crash.

Amazon said it will continue supporting the investigation and those affected by the accident while its operations with 21 Air remain paused.