Authorities say 29-year-old George Sterling got in a five-car collision in his girlfriend's car on Sunrise Highway in Valley Stream about 9:30 a.m. Sunday.
Eyewitnesses say he left the scene with a handgun and ran toward the Target.
Police caught him leaving the store and then found a bag with a gun in it on a shelf in the store.
The Target was closed during the police search.
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