Tractor-trailer rollover snarled the morning commute on I-684 in northern Westchester this morning.

Police say the crash happened near the merge for I- 684 and the Saw Mill Parkway in Katonah.

The accident resulted in the closure of two northbound lanes for hours. The scene has since been cleared.

Investigations are ongoing to determine the cause of the truck's overturn. No injuries have been reported.