Authorities in Philadelphia are searching for a suspect they say robbed a U.S. Postal Service letter carrier on Valentine's Day.
The robbery happened just before 5 p.m. on Feb. 14 on the 6100 block of Elmwood Avenue in Southwest Philadelphia.
The suspect was caught in surveillance photos wearing black sweatpants and a black hoodie along with white sneakers and carrying a black bookbag that has a red stripe.
Officials with the USPS say that the suspect showed that he had a handgun to the mail carrier during the robbery.
Get Philly local news, weather forecasts, sports and entertainment stories to your inbox. Sign up for NBC Philadelphia newsletters.
The suspect is considered armed and dangerous.
If you have any information, please contact the U.S. Postal Inspection Service at 877-876-2455 and say "Law Enforcement." Officials say there is a $150,000 reward for information that leads to an arrest and convection. Tips will be kept confidential.