This afternoon BART riders are faced with a closed Civic Center Station and significant delays in both the San Francisco and East Bay directions due to a "major medical emergency" according to authorities. [Update: Civic Center is now back open] As the Chronicle has learned, a person jumped in front of a train at that station, with first reports coming in at around 2:30 p.m. The person has been pronounced dead. BART officials have said that trains will pass through the station without stopping.

According to someone either tweeting from the scene or listening to scanners, a medical examiner had arrive as of around 3:20 p.m.

It looks like Civic Center is open, though delays remain.

If someone you know exhibits warning signs of suicide: do not leave the person alone; remove any firearms, alcohol, drugs or sharp objects that could be used in a suicide attempt; and call the U.S. National Suicide Prevention Lifeline at 800-273-TALK (8255) or take the person to an emergency room or seek help from a medical or mental health professional.