Dog dies on flight after being placed in overhead bin

SPOKANE, Wash. - A dog died after it was placed in an overhead bin on a United Airlines flight, the airline confirmed to ABC News.

June Lara, a passenger on the Houston to New York flight, said in a Facebook post that a mother and her daughters were boarding the plane with their dog in tow when a United flight attendant "insisted" the dog be stowed in an overhead bin. 

The dog remained stowed in the overhead bin for the three-hour flight and was not given any water or tended to. 

United Airlines says it assumes full responsibility for the dog's death.

“This was a tragic accident that should have never occurred, as pets should never be placed in the overhead bin,” United said in a statement. “We assume full responsibility for this tragedy and express our deepest condolences to the family and are committed to supporting them. We are thoroughly investigating what occurred to prevent this from ever happening again.”