A "credible explosive device" discovered under a car returned to the Avis Car Rental area in Albuquerque, New Mexico, brought the bomb squad, police, FBI and ATF to the rental car return center attached to the Albuquerque airport Sunday morning.

Image source: KRQE-TV

The car was rented from another location and dropped off early Sunday morning, according to officials. A mechanic performing routine, post-rental maintenance on the vehicle noticed the suspicious device underneath the car and the authorities were called.

While no flights were cancelled or delayed, the rental car center was shutdown for hours.

EOD is rendering safe a credible explosive device at the @ABQSunport rental car facility. Airport is open and no flights are being affected

— Albuquerque Police (@ABQPOLICE) February 14, 2016

As the bomb squad neutralized and removed the device, customers returning cars were sent to an alternate location. However, travelers arriving at the airport, expecting to pick up a rental were forced to wait over four hours until the "all clear" was given.

All clear at the rental car facility. Normal operations for drop-offs and pick-ups resuming.

— ABQ Sunport (@ABQSunport) February 14, 2016

The FBI and ATF are reportedly investigating the incident, looking to find the person who originally rented the car and who returned it to the Albuquerque airport on Sunday.

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