NORTH CHARLESTON, S.C. (WCBD) - North Charleston police have closed all eastbound lanes of I-26 after a person jumped from the Ashley Phosphate Road overpass. Emergency crews are on the scene, and authorities are urging drivers to avoid the area while the investigation continues. Witnesses tell News 2 that an 18-wheeler and at least 3 other cars appear to be involved in the incident. No further details, including the condition of the individual who jumped or any potential injuries among drivers, have been released at this time. Count on 2 for more updates.