A vehicle accident involving a motorcycle along southbound Interstate 805 is causing heavy traffic, according to California Highway Patrol.
Three lanes are currently blocked along southbound I-805 at Olympic Parkway in Chula Vista.
The fire department and CHP are on the scene.
Check back for updates on this story.
Keep up to date on breaking news: Download our improved iPhone app, follow us on Twitter @nbcsandiego, fan us on Facebook, sign up for our breaking news e-mail alerts or text SDBREAKING to 622339 to receive text messages for local breaking news. (For more info, text HELP. To end, text STOP. Message and data rates may apply.)