Medical emergency in SF triggers 20-minute BART delays

Delays of 20 minutes were reported on BART following a medical emergency in San Francisco. Delays of 20 minutes were reported on BART following a medical emergency in San Francisco. Photo: Sam Wolson / Sam Wolson / Special To The Chronicle Photo: Sam Wolson / Sam Wolson / Special To The Chronicle Image 1 of / 1 Caption Close Medical emergency in SF triggers 20-minute BART delays 1 / 1 Back to Gallery

A medical emergency in San Francisco caused a 20-minute delay on BART systemwide at the start of the Friday commute, according to the transit agency.

The nature of the medical emergency, reported at BART’s 16th Street Mission Station in San Francisco was not immediately clear. BART first reported the delays on Twitter just before 5 p.m.

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Michael Bodley is a San Francisco Chronicle staff writer. Email: mbodley@sfchronicle.com. Twitter: @michael_bodley