Amazon says it has stopped working with 21 Air, the carrier involved in the Prime cargo crash

Amazon has stopped working with the cargo airline whose plane crashed in Miami earlier this month.

"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," an Amazon spokesperson said on Sunday.

21 Air is headquartered in North Carolina and owned by Jim Crane, a logistics billionaire who also owns the Houston Astros.

Investigators said that one of the pilots warned the other that they were approaching the runway too fast, but "there was not a consistent verbal response."

The flight data recorder showed the airplane's thrust increased consistent with a go-around attempt, but the throttles were then reduced, and the brakes were reapplied.

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These are used to help slow the plane down upon landing, and Shin said it was not clear why they might not have been used.

"Our deepest condolences are with the families and loved ones of those who lost their lives," he added. "Our immediate priorities are supporting those affected, assisting the appropriate authorities, and ensuring that accurate and verified information is communicated as it becomes available."