A Union City man thought he a had a residential building lobby all to himself Sunday afternoon.

Fortunately for residents of the Hoboken building in the area of Observer Highway and Madison Street, Detectives Adam Colon and John Quinones were close behind, watching the package thief, authorities said.

Hoboken Lt. Danilo Cabrera said Colon and Quinones were on Observer Highway in an unmarked radio car when they saw a man looking into the building while holding an empty bag.

The officers approached the building and saw the the man, later identified as Eduardo Cruz, 48, emerge with the bag full, Cabrera said. Cruz was met by Colon and Quinones, who found that the package inside Cruz’s bag was addressed to someone in that building, Cabrera said.

Cruz was charged with burglary and theft and he was taken to Hudson County jail.