A veteran journalist who was bicycling five blocks from the Convention Center Monday was killed in a collision with a 5.5-ton military truck that was blocking an intersection so a motorcade could pass through.
Police identified the cyclist as Constance Holden, 68, of Northwest.
Holden had apparently just left the headquarters of the American Association for the Advancement of Science when the accident occurred, according to the web site for AAAS, where Holden worked for the journal, "Science."
The military truck was pulling forward to block New York Avenue at 12th Street when the accident occurred, says Maj. Gen. Erol Schwartz, commanding general for the D.C. National Guard.
U.S. Secret Service spokesman Max Milien says the accident happened about 6:05 p.m.
"Every time we move a vehicle, there is a ground guide," Schwartz said.
Schwartz says a video of what happened will be reviewed. The Metropolitan Police Department is investigating the fatality. Officials have not said who was being escorted in the motorcade connected to the Nuclear Security Summit.
Holden joined "Science" in 1970. She was known not only for her writing, but also for her oil paintings.
"This is a terrible loss both personally and professionally for so many on our staff who knew her well," said Alan I. Leshner, chief executive officer of AAAS, as he informed staffers.
Holden is survived by her husband John Butters of D.C.