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An 11-year-old boy riding his bicycle was injured after a driver struck him on a Brooklyn street early Monday evening.

The motorist was arrested a block away from the scene. Initially, witnesses said, he stopped to check on the boy, but then got back into his 2005 Honda minivan and drove down the block before police arrived.

Police from the 70th Precinct arrested Troi Walker, 44, of 1717 Bath Road, Bristol Pennsylvania. Police say he was charged with aggravated unlicensed operator, failure to yield, failure to produce insurance identification card, and unlicensed operator. He was not charged with leaving the scene, police officials said.

The crash occurred at 5:10 p.m. on Feb. 17, when the boy, with his 14-year-old brother were crossing Rugby Road and Ditmas Avenue with other bicyclists. The driver of the van allegedly ran a red light while making a left turn onto Rugby Road and struck the boy, witnesses said.

Firefighters stabilized the boy as his brothers huddled around him. The victim’s father also showed up from their nearby home.

The boy was taken to Maimonides Medical Center, where he was reported in stable condition and expected to make a recovery. None of the boys were wearing helmets at the time of the crash.

A witness who stayed with the boy was incredulous that the driver left.

“He did the right thing and stopped to check on the boy, but then, he left – I don’t know why,” the witness said.