A Deer Park motorcyclist who left the scene of a North Babylon hit-and-run crash Thursday that left a man critically injured has been arrested, Suffolk County police said.

Kenneth Jones Jr., 19, is charged with leaving the scene of an accident without reporting serious physical injury, third-degree aggravated unlicensed operation of a motor vehicle and third-degree criminal possession of stolen property, police said. He is scheduled for arraignment in First District Court in Central Islip on Saturday.

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Two other motorcyclists were involved in the 12:40 p.m. crash on Route 231 in North Babylon, but Jones, the driver of a 2002 Suzuki, left his motorcycle at the scene on Deer Park Avenue and fled on foot, police said.

One motorcyclist, Travis Lovett, was in critical condition Thursday when his 2007 Suzuki crashed into the back of a Ford sport utility vehicle, which then flipped onto its roof with its driver and a child inside, Suffolk police said.

Lovett, 20, of Brentwood, was taken to Good Samaritan Hospital Medical Center in West Islip with a head injury, police said.

The driver of the Escape, Jacqueline Morrison, 54, of Babylon, and her 3-year-old granddaughter were also treated at Good Samaritan for nonlife-threatening injuries.

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A third motorcyclist, Stanley Severe, 22, of Deer Park, did not receive medical treatment. He was driving a 2007 Honda motorcycle.