Philadelphia police are looking for a serial armed robber who's targeted businesses in Chestnut Hill and West Oak Lane.
Action News obtained surveillance video from two of three robberies.
The robber pulled a knife on an employee at the Metro PCS on Stenton Avenue on Tuesday, but didn't get any money.
The next day, the same suspect held up a different Metro PCS on Ogontz Avenue and got $120.
He's also accused of trying to rob a Gateway Cleaners on Germantown Avenue last Saturday.
Armed robber targets businesses in Chestnut Hill, West Oak Lane