HALLANDALE BEACH, Fla. -

A U.S. mail truck jackknifed Tuesday morning on I-95 blocking all southbound lanes at Pembroke Road, just before the Hallandale Beach Boulevard exit.

The incident happened around 3:30 a.m. but at this time it is unclear what caused the truck to jackknife.

A Hallandale Beach rescue unit arrived to the scene, as well as Florida Highway Patrol and FDOT’s Severe Incident Response Unit.

It is unclear whether any one was injured.

All southbound lanes on I-95 are back open.