Investigators released surveillance video from inside the TJ Laundromat on 3300 block of Frankford Avenue.
The thief walked in and approached a 36-year-old female employee, pulled out a gun and demanded money.
The victim went behind the counter and gave the man an unknown amount of cash.
The suspect then ran off.
The employee was not hurt.
If you have any information about this crime or this suspect, please contact: East Detective Division at (215) 686-3243.