WASHINGTON, D.C — An armed man kidnapped a woman, shot a Census Bureau guard and led police on a car chase through Maryland and Washington, D.C., on Thursday before authorities cornered him in an exchange of gunfire that left the suspect and a police officer wounded, authorities said.

The guard, identified as Lawrence Buckner, died at a hospital in Cheverly, Maryland, at 7:19 p.m. Thursday, said Prince George’s Hospital Center spokeswoman Erika Murray. She did not give Buckner’s age.

The officer and suspect were both conscious when they were taken for medical care, D.C. Police Chief Cathy Lanier told a news conference.

Lanier said a guard at a gate of the U.S. Census Bureau in Suitland, Maryland, saw two people fighting in a car that matched the description of a vehicle described in a report of an armed kidnapping.

When the guard approached the car, the man shot him and took off, crossing the border into the nation’s capital and firing at D.C. police giving chase.