Search for Philadelphia serial robber

PHILADELPHIA (WPVI) -- A serial robber is on the loose in Philadelphia and detectives want to catch him before he strikes again.

Luckily, several of the businesses the suspect targeted had surveillance cameras.

Detectives say the same man robbed a clothing store and then a fast food restaurant on Saturday.

He is then accused of robbing a nail salon on the 3500 block of Germantown Avenue and threatening the employees inside.

Ten minutes later police think the same man robbed a nearby Dunkin Donuts.

Then just a few hours later investigators say he robbed another Dunkin Donuts in the 500 block of Lehigh Avenue.

During all of the robberies, police say the suspect threatened the employees with guns.

Anyone with information should contact Philadelphia police.