UPDATE: All lanes are now open.
SAN DIEGO (KGTV) - A major accident on I-8 westbound near College Avenue has forced lane closures for at least the next hour.
Only one lane is open while people are being rescued from the vehicles involved in the accident. It is unclear what caused the accident, which happened around 8:40 p.m. Sunday.
A SIG alert has been issued for the next hour, according to the California Highway Patrol.
This is a developing story. 10News will update as details become available.