Washington (CNN) - A 28-year-old Virginia man was held late Wednesday on a charge of assault with a deadly weapon after a security guard was wounded in the lobby of the Family Research Council, a conservative policy organization, authorities said.
Police and federal agents were investigating what prompted the suspect, identified by the FBI as Floyd Lee Corkins II, to walk into the group's headquarters about 10:45 a.m. and open fire.
Corkins, is from Herndon, a suburb of Washington, the FBI said in a statement about the charge.
The guard helped wrestle the gunman to the ground. Called a hero by police, the security officer was in stable condition after being shot in the arm.
A law enforcement official said the gunman made some remarks opposing the Family Research Council's policies before opening fire.
This morning on "Early Start," Sandra Endo reports on police efforts to determine a motive in the shooting.