Pennsylvania authorities suspect that two men accused of stealing mobile phones were monitoring law enforcement. Local media reported Tuesday that when they were arrested last month, one of the two suspects was carrying a camera-equipped drone that police saw flying over the Upper Saucon Township's police headquarters the day before the arrests.

The accused are Duane Holmes, 44, of North Bergen, and Chaviv Dykes, 20, of Newark. Police said they had $50,000 in mobile phones allegedly stolen from a Verizon Wireless store and other outlets that NJ.com said were lifted "during a string of smash-and-grab burglaries."

Police said footage from the drone they were reviewing did not contain images of the township's police station. However, the footage included still shots of I-495 in Union City heading toward the Lincoln Tunnel, and West 38th Street in Manhattan, CBS reported. Other footage from the drone was of shopping areas, leading CBS to suggest that the suspects were also using the drones to surveil their targets.

NJ.com said Dykes and Holmes are believed to be members of a "burglary ring" known as the "Tub Gang" that is "suspected of victimizing businesses in New York, New Jersey, Pennsylvania, Illinois, Minnesota, and Missouri."