AIKEN, S.C. (WRDW/WAGT) - Eastbound Interstate 20 is shut down near the Aiken airport after a tanker truck overturned.

The accident happened around 12:30 p.m. when the tanker, reportedly carrying about 2,400 gallons of used motor oil, flipped.

One person was initially trapped but freed themselves, according to crews on the scene.

The motor oil was leaking out of the tanker, with about 100 gallons spilling by 12:35 p.m., according to crews on the scene.

A hazardous materials crew was requested.

Crews at the scene expect a lengthy closure, and a detour was being worked out.

Traffic was severely backed up after the accident, which happened in the same area where other tankers have overturned.

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