SAN DIEGO — A seven-vehicle crash on Interstate 15 in the Carmel Mountain Ranch area prompted traffic delays Monday, authorities said.

The collision occurred at 7:46 p.m. on I-15 southbound near the Exit 21 off-ramp, according to California Highway Patrol.

One person was taken to a hospital with minor injuries, per law enforcement.

As of 9:01 p.m., all lanes reopened after several lanes were closed for several hours, traffic officials said.

The cause of the crash is under investigation.

Check back for updates on this developing story.