4 critically injured in Port Arthur explosion

PORT ARTHUR, Texas – An explosion has been reported at a tank farm in Jefferson County on Friday.

According to Sunoco Logistics, the explosion happened at a construction project at its Nederland Terminal.

The company says the flash fire involved a crude-oil pipeline connection.

Seven employees of a contractor were injured, four of them critically.

The workers were welding when the fire started, said the Jefferson County Sheriff's Office.

The cause of the accident is under investigation.

KPRC will provide updates when they become available.

None of the nearby residents were affected.