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 . A source working with the DC Center for the LGBT Community told CNN that Corkins had worked as a volunteer at the center . David Mariner , executive director of that center , released a statement Wednesday night saying he was `` shocked to hear that someone who has volunteered with the DC Center could be the cause of such a tragic act of violence . `` No matter the circumstances , we condemn such violence in the strongest terms possible . We hope for a full and speedy recovery for the victim and our thoughts are with him and his family , '' Mariner said in the statement . Warning signs of violence : What to do . A backpack and a vehicle believed to belong to the suspect were recovered , the law enforcement official told CNN . The suspect 's weapon was a legally obtained 9mm handgun , according to another law enforcement official . The suspect had obtained the weapon `` fairly recently '' from a gun shop in Virginia . The council is a Christian group that has pushed family and anti-abortion issues and religious liberties . It has been a leading opponent of same-sex marriage . The Family Research Council recently backed restaurant chain Chick-fil-A after the company 's president , Dan Cathy , said the company supports traditional marriage . Investigators said that it was too early to say whether the organization was targeted for its political views , but made clear that would be part of the investigation . `` We do n't know enough yet about him or his circumstances to be able to determine his connection to this group or to the business or to what , you know , mentally what he 's doing or thinking . So we 're going to try to sort it all out , and pull the evidence together , do as many interviews as we can , and get it all together , '' said FBI Assistant Director James McJunkin . 3 killed in shootings near Texas A & M University . DC Police Chief Cathy Lanier said the man entered the building in downtown Washington and was `` confronted by a security guard . '' The suspect opened fire , striking the guard . `` The security officer here is a hero as far as I 'm concerned . He did his job . The person never made it past , farther then the front door , '' Lanier said . Steve Biondi , a tourist from New York , said he witnessed the first two police officers arrive at the scene . They ordered the suspect to put the gun down . The man got on the ground , and did not appear to put up a fight , according to Biondi . By the numbers : Guns in America . He described the suspect as about 6 feet tall and weighing about 240 pounds . The FBI 's Jacqueline Maguire said the case is being worked jointly by the FBI and the Metropolitan Police Department `` to determine motive/intent and whether a hate crime/terrorism nexus exists . '' Family Research Council President Tony Perkins said `` our first concern is with our colleague who was shot today . Our concern is for him and his family . '' Launched in 1983 , the Family Research Council says it promotes `` faith , family and freedom in public policy and public opinion . '' Presumptive Republican presidential nominee Mitt Romney said he was appalled by the incident . `` There is no place for such violence in our society , '' he said in a statement . `` My prayers go out to the wounded security guard and his family , as well as all the people at the Family Research Council whose sense of security has been shattered by today 's horrific events . '' The National Organization for Marriage , which has actively campaigned against same-sex marriage efforts , also condemned what it termed an attack on the Family Research Council . After shootings , opinions on gun control have n't changed . Opinion : Politicians hammered by the NRA . 5 things gun owners want you to know . CNN 's Greg Seaby , Javi Morgado , Paul Courson , Sandra Endo , Mike M. Ahlers and Dan Gilgoff contributed to this report .
Suspect , 28 , held on assault with a deadly weapon charge , FBI says . Suspect allegedly made comments about organization , official says . No motive for the shooting has been established , authorities say . The Family Research Council promotes conservative social policies .