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.

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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.