ROMULUS, Mich. (AP) - An 8-year-old pet Pomeranian that was bound for Newark died during a flight layover at Detroit Metropolitan Airport.

Michigan media outlets report that the dog was flown in a pet carrier from Phoenix and was headed to Newark. It was found dead Wednesday morning in its carrier in a cargo facility at the airport, southwest of Detroit in Romulus.

Delta Air Lines says a flight attendant checked on the dog about 6 a.m. The attendant checked again about two hours later and the dog was dead.

Delta tells WXYZ-TV in a statement that it is "conducting a thorough review of the situation."

Earlier this year, a French bulldog puppy died after a United Airlines flight attendant told its owner to put the dog's carrier in an overhead bin.