18-wheeler jackknifes near La Plaza Mall in McAllen

Accident involving 18-wheeler in McAllen // Photo by @Spaintyna via Twitter

Authorities are investigating a multiple-vehicle accident that ended with an 18-wheeler landing on its side in McAllen.

It all happened off South 10th Street and the frontage road of Expressway 83 just after 7:30 p.m. Tuesday.

Full details were not immediately available but an 18-wheeler ended up on its side on the eastbound lanes of the frontage road.

It's not immediately clear if there were injuries.

Firefighters and police diverted traffic while crews worked to clear the accident.

Action 4 News will provide more information as it becomes available.