The crash occurred just after 6:35 p.m. on Monday, Aug. 19 in Mastic.
The girl, Paiton Muens, of Mastic, was struck by a 2016 Toyota RAV4, being operated by Hugo Sinay-Boch, 30, while riding her bicycle northbound on Mastic Road, between Hampton Avenue and Main Avenue, Suffolk County Police said.
Muens was transported to Stony Brook University Hospital with serious but non-life-threatening injuries. Sinay-Boch, also of Mastic, was not injured.
The vehicle was impounded for a safety check.
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