Gregory Avon, 59, was charged with assault and endangering the welfare of a child, about an hour after the incident occurred, police said.
Avon and the teen were involved in a collision at 10:05 a.m. on the South County Trailway about a quarter-mile south of county police headquarters. After the collision, Avon is accused of punching the boy in the face and causing a serious injury to his jaw and mouth, police added.
The boy was taken to the Westchester Medical Center in Valhalla where he underwent surgery, police said.
Following the assault, Avon rode north on the bike path. He was followed by several bicyclists who had come upon the scene after the confrontation occurred. They lost sight of him on Route 117 in the vicinity of Pace University.
Multiple Westchester County patrol officers, assisted by the Westchester County Police aviation unit helicopter and Pleasantville police, began a search of the area but could not immediately locate him, police said.
At 11:15 a.m., Westchester County Police Officer James O’Meara spotted a bicyclist near Routes 22 and 120 in North Castle who fit Avon's description and took him into custody.
Avon was booked at county police headquarters in Hawthorne and released pending an Oct. 6 appearance in Mount Pleasant Town Court
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