Fourth Squad detectives are looking for three men who robbed two teenagers of their cellphones in Elmont on Thursday, Nassau County police said.

In the first robbery, at about 4:30 p.m. on Monaco Avenue, one of the subjects "simulated having a handgun and demanded the victim's cellphone," police said. After the 15-year-old surrendered his cellphone, the men rode away on bicycles.

Police said that in the second robbery, at about 5 p.m. on Croydon Road, one of the subjects displayed a knife and demanded a 16-year-old's property. Again the men fled on bicycles after the victim handed over his cellphone, police said.

No injuries were reported.

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Each suspect is 18 to 20 years old, police said.

Anyone with information can call Crime Stoppers at 800-244-8477. All calls will be kept confidential.