Two men were killed — one by a pair of bicycle-riding gunmen — and four others were wounded during several shootings in Brooklyn, police said Saturday.

On a balmy Friday evening, youths in Brooklyn's Flatbush neighborhood were out in the streets when a 19-year-old was shot at about 10 p.m., police said. The fatal gunfire came from one of two men riding by on bicycles at Sterling Place and Nostrand Avenue.

The 19-year-old victim, whose name police did not immediately release, was taken to Kings County Hospital, where he was pronounced dead. No arrests were made.

A half hour earlier, four other teenagers were shot in a nearby Brooklyn neighborhood, Canarsie.

A 17-year-old youth was shot in the leg and an 18-year-old in the stomach on East 105th Street, police said. Both were taken to Brookdale Hospital, where they were reported in stable condition.

Five blocks over on East 100th Street, gunshots hit a 19-year-old in the ankle and a 16-year-old in the arm, police said. Both were taken to Kings County Hospital, where they were reported in stable condition. No arrests were made in the shootings.

Earlier Friday, at about 7:30 p.m., a 27-year-old man was shot while arguing with a group of other men, police said. One man pulled out a gun and shot the man in the chest and head. He was taken to Brookdale Hospital, where he was pronounced dead. The suspect fled on foot, police said.