Thanks to Kristin for sending from 14th and U Street, NW just before 1pm.
Unconfirmed but another reader reports hearing on the corner: “Cop ran red light without lights on sirens and t boned a car.”
Presumably there are cameras at the corner of 14th and U which will have recorded the crash.
DC Fire and EMS reports: “Update Crash with vehicle overturned 14th & U Sts NW. No entrapment. 4 patients being evaluated.”
Updates as more is learned/confirmed.