Police are searching for a bike-riding bandit who robbed a man on a West Hempstead street at knifepoint early Thursday evening, taking cash, credit cards and a driver's permit.

The robbery occurred at 8:30 p.m. on Nassau Boulevard.

The 24-year-old victim was not injured during the robbery, Nassau County police said.

Police said the victim was walking along Nassau Boulevard when the robber, armed with a knife and riding what was described as "a small dark bicycle," approached him -- and asked to use his cellphone.

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"When the victim stated he did not have a cellphone, the subject pointed the knife at the victim and demanded money," police said in an account.

The victim then handed the robber his wallet, containing cash, credit and debit cards and his New York State driver's permit, police said. The suspect then fled on the bike north on Nassau Boulevard, police said.

The suspect is described as being in his 20s with a heavy build and long wavy black hair. He wore a red baseball cap.

Police are asking anyone with information about the robbery to call Crime Stoppers at 800-244-TIPS. All calls will remain confidential.