The Al Qaeda affiliate in Yemen has claimed responsibility for the crash of a UPS cargo plane in Dubai from back in September.

Al-Qaida in the Arabian Peninsula also says it was behind the mail bomb plot uncovered by international authorities late last week.

A U.S. official has said that authorities have found no evidence that the crash of the Boeing 747-400 was caused by a bomb. Investigators still don’t know what caused the fire that erupted on the plane’s main cargo deck.