This story has been updated.
HARRISON, N.Y. -- A serious accident involving an ambulance and box truck resulted in the closure of two lanes of southbound I-684 Thursday near I-287.
No serious injuries have been reported.
The accident, in which the box truck overturned, occurred around 5:20 p.m., and was just south of Route 120 (Exit 2) in Harrison.
Backups were to Route 22 in Armonk.
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