Several San Antonio media outlets are reporting an active shooter at Methodist Stone Oak hospital. The shooter is reported to be wearing hospital scrubs.

News 4 San Antonio reports:

Police are responding to an incident at Methodist Stone Oak Hospital on Sonterra Boulevard. The hospital is on lock down as police search for a man in a red jacket and blue scrubs. All entrances and exits are closed at this time. Preliminary reports are of a man threatening people with a gun in the labor and delivery room. No injuries have been reported at this time.

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Update: False alarm?

Twitchy will update this post as details emerge.