It happened just before 4 a.m. inside the La Gosta Bar on the 900 block of East Cayuga Street.
Click here to watch the surveillance video
The burglar was caught on surveillance breaking into the bar by forcing open a rear door.
Once inside, the thief stole an unknown amount of cash and $500 worth of liquor.
He then loaded the items into a dark-colored sedan driven by a second unknown suspect.
Anyone with information is asked to call police at 215.686.TIPS (8477) or text a tip to PPD TIP (773847).