37-year-old Michael Kevin Cox of Wilmington is now accused of robbing a Supercuts Hair Salon on Marsh Road at the Shops of Graylyn in New Castle County, Delaware on Monday.
Cox is also a suspect in a number of other robberies in Rehoboth, Delaware and Delaware County, Pennsylvania.
Police say Cox tells his victims he is infected with HIV, and the needle is also tainted with the disease.
No one has been injured in these crimes.
Cox is described as 5'8" tall, 150 pounds with green eyes.
He was last seen driving a 2002 Lexus RX-3 SUV, silver in color, displaying a PA registration of EMD 6030.
Police say Cox is considered dangerous and should not be approached.
