SAYVILLE - ? Police are searching for a pair of armed and dangerous serial robbers in Suffolk County. Investigators say the men have hit four stores so far, and are threatening workers with a gun.

The first two robberies happened on July 15 in Bohemia and Elwood. A week later, the men held up two 7-Eleven stores in Islandia and the other in Sayville. Anyone with information is asked to call Suffolk Crime Stoppers at 1-800-220-TIPS.