Updated: 1 a.m. ET Friday:
A spokeswoman for Prince George's Hospital Center says Lawrence Buckner, the security guard at the U.S.Census Bureau headquarters in Suitland, Md., died at the hospital at 7:19 p.m. Thursday.
The Associated Press reports: An armed man kidnapped a woman, shot the guard at the Census Bureau campus and led police on a car chase through Maryland and Washington, D.C., before he was captured. Authorities cornered him in an exchange of gunfire that left the suspect and a police officer wounded.