All but one southbound lane on Highway 101 south of San Francisco closed Tuesday night after multiple cars struck and killed a pedestrian, according to the California Highway Patrol.
A CHP spokesperson confirmed to The Standard that the crash happened at Grand Avenue in South San Francisco.
Initially, all southbound lanes were closed until CHP opened up the slow lane to allow cars to pass. As of 8 p.m. Tuesday, it was unclear when the other lanes would reopen.
The pedestrian was described as a Latino man, probably between the ages of 30 and 40, and possibly transient.
As of 8:15 p.m., first responders were still waiting for the coroner to arrive.
Highway patrol said it will release more information as it becomes available.
The traffic jam comes as the roads in and around San Francisco face additional congestion due to the Asia-Pacific Economic Cooperation summit taking place this week.
With 30,000 visitors descending on the Bay Area for the event, officials have warned of travel disruptions not just in San Francisco but also in surrounding cities and around the San Francisco International Airport.
Bay City News contributed to this report.