Update on 5/1 — The driver of the truck was pronounced dead at the hospital. He is identified by police as 57-year-old Franklin Nalls of Alexandria.
A box truck crashed into the side of a building in Crystal City after the driver suffered some sort of medical emergency.
It happened at 3:17 this afternoon on the 1700 block of Crystal Drive. A witness said he heard a loud boom, then saw passersby performing CPR on the driver, whose face had turned blue.
The man was taken to the hospital in cardiac arrest.
No pedestrians were hurt, the witness said. The Dress Barn store the truck crashed in to suffered little apparent damage.