WASHINGTON — An unauthorized airdrop of Halloween treats has landed four Arizona National Guard members under investigation.

According to a statement from the Arizona Guard, the four crew members of the 2nd Battalion, 285th Aviation Regiment flew over an upscale Phoenix neighborhood on Oct. 28 and threw candy from their UH-60 Black Hawk helicopter, the Army Times reported.

The aircraft had taken off from Papago Military Reservation and was headed for a training mission on the north side of Phoenix when it flew over the Arcadia neighborhood in central Phoenix and dropped candy on a Halloween party.

Residents say the helicopter hovered about 50 feet above the neighborhood for several minutes, prompting curious and worried neighbors to theorize on social media about what it was doing, the Arizona Republic reported. Some even feared a drug drop was in progress.

The four aviators, who have not been identified, have been suspended from flying while the investigation proceeds, the Army Times reported.

A statement from the Arizona Guard’s land component commander said using military helicopters to spice up parties is forbidden.

“The incident was not sanctioned by the Arizona National Guard and will be investigated further to ensure it does not occur again,” said Army Brig. Gen. William Hall. “The Arizona National Guard does not authorize nor condone the use of military aircraft or equipment for personal use.”