Jackknifed Semi Slows Down Traffic Near I-44 and Penn. Ave.

A semi-truck has jackknifed near Interstate-44 and Pennsylvania Avenue causing slow traffic flow.

Hazmat crews are responding to the scene due to leaking fuel.

The Oklahoma City Fire Department advises drivers to "drive with caution" and ask that they avoid the area, if possible.

This is a developing story. Refresh this page for updates.