Police said he robbed two banks in Westbury -- one in March, one in February. Now, they're asking if you can help them find and arrest the unshaven suspect, and are offering a reward for that assistance.

The first robbery occurred on Feb. 23 at the Bethpage Federal Credit Union on Old Country Road at 11:14 a.m., Nassau County police said.

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The second one occurred at the TD Bank branch on Brush Hollow Road at about noon on March 29, police said.

The suspect is described as being in his late 20s, about 6-foot to 6-foot-2 and about 170 to 180 pounds, police said. He wore glasses or sunglasses, a dark-hooded sweatshirt and in at least one of the robberies, a knit hat. He was unshaven.

He threatened use of a firearm, but none was seen.

Police are asking anyone with information to contact Nassau County Crime Stoppers at 800-244-TIPS. All calls will remain confidential and callers are eligible for a cash reward of up to $5,000 for any information leading to an arrest.