Update: According to a trusted source, the problem is mechanical. Still unsure of where, or what nature. And also, the fire? Can anyone confirm?

Original post: This just in by way of text from roving Muni Diaries field reporter Eugenia Chien:

Fire at Castro Station. K, L, M lines are delayed or not running. They are advising people to take a shuttle on Van Ness. Civic Center Station a mess!

Then:

Now the F is nowhere to be found

Stay tuned for more ….

Related posts:

1. Castro Fire Contained, Service Restored
2. Person Killed by Muni Train at Castro Station (w/update)
3. Fire on Kearny, Muni Rerouted