The Pentagon has confirmed that a U.S. reconnaissance drone crashed off the coast of Somalia on Monday, but defense officials deny it was shot down by fighters loyal to the al-Shabab insurgency.

The Al Qaeda-affiliated militant group posted several pictures to its Twitter account that it claimed are parts of a drone it shot down with the message: “This one will no longer be able to spy on Muslims again. So much for the empty rhetoric on the drone program!”

U.S. military officials said it’s “highly unlikely” that the drone was shot down, especially since the aircraft fly at such high altitudes.