RONKONKOMA, N.Y. (CBSNewYork) — A Long Island woman is accused of leaving the scene of a crash that seriously injured two boys on bicycles.

It happened shortly after 7 p.m. Monday on Express Drive North in Ronkonkoma.

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Police said three boys were riding in the shoulder when two of them were hit.

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A 9-year-old victim was airlifted to Stony Brook University Hospital with serious injuries. A 12-year-old was also treated for serious injuries.

A third boy, only 6 years old, was not hurt.

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Early Tuesday morning, police arrested 31-year-old Shannon Palmer outside her Hauppauge home. She was charged with two counts of leaving the scene of an accident with serious physical injuries.