SAN FRANCISCO (KCBS) — The San Francisco Municipal Railway light rail system was facing major delays Tuesday morning as trains between the Van Ness and Civic Center stations lost power twice.

San Francisco Supervisor Scott Wiener, a frequent critic of Muni’s on-time record and other issues related to the transit agency, was on one of the delayed Muni Metro trains, causing him to be late for a meeting – focusing on transportation issues..

READ MORE: Police Searching For Missing Belmont Teen With Mental Health Issues

Muni officials say delays began about 8:45 a.m.

READ MORE: COVID: FDA Expected To Authorize Mixing Moderna, Johnson & Johnson Booster Shots

The scene was eventually cleared by 9:35 a.m. but the trains that were held back were just starting to catch up.

MORE NEWS: UPDATE: Mystery Hero Rescues Man Trapped In Burning Building In San Francisco

(Copyright 2013 by CBS San Francisco. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)