The scene outside 801 G Street NW following the August 15 shooting. (Photo by @AM_Hoffman)

The man accused of carrying out a shooting in the lobby of the Family Research Council in August received several more charges today from a federal grand jury, including the first charge filed under the District of Columbia’s anti-terrorism law.

Floyd Lee Corkins II was arrested August 15 after he allegedly opened fire in lobby of 801 G Street NW. A building manager, Leo Johnson, was wounded in the attack after tackling and disarming the shooter. Corkins was arrested at the scene and a week later was indicted on a federal charge of transporting a firearm across state lines and a D.C. charge of assault with intent to kill with a deadly weapon.

Corkins allegedly said “It’s not about you, it’s about the policy,” before opening fire, giving the shooting a political accent. The Family Research Council is a conservative Christian organization that is loudly opposed to same-sex marriage and adoption rights.

The charges filed today supersede the August indictment, the U.S. Attorney’s office for the District of Columbia said in a news release. In addition to the terror charge, Corkins received one charge each of attempted murder while armed, aggravated assault while armed, and second-degree burglary while armed; and three counts of possession of a firearm during a crime of violence.

Corkins is also the first defendant to be charged under the District’s Anti-Terrorism Act of 2002, the U.S. Attorney’s office says.

At a press conference the day after the shooting, the FRC’s president, Tony Perkins, blamed the Southern Poverty Law Center for the shooting. The SPLC lists Perkins’ organization as a hate group, citing what it calls “baseless, incendiary name-calling” against gays and lesbians. That same day, a coalition of gay-rights groups put out a statement denouncing the shooting.

On Monday, Johnson received a medal of honor from D.C. Mayor Vince Gray, the first such award in the District’s history.