(ADDED: WSB photo)

7:27 PM: If you are hearing the sirens – a sizable emergency response is en route to a crash at 15th and Henderson.

7:41 PM: Eastbound Henderson is blocked at 16th. An ambulance has been summoned for one person.

8:07 PM: Two vehicles collided; they have since cleared to the side, SFD has left the scene, and a passenger from one vehicle has been taken to the hospital. The road was reopening after some debris cleanup.