Accused Family Research Council shooter Floyd Corkins indicted

Local and federal investigators gather evidence after a security guard was shot in the arm at the headquarters of the Family Research Council on Aug. 15, 2012, in Washington, DC.

A grand jury on Wednesday indicted a man accused of shooting a security guard in the lobby of the conservative Family Research Council in Washington, DC, on weapons and assault charges.

Floyd Corkins, 28, was indicted on a federal charge of interstate transportation of a firearm and ammunition and two District of Columbia offenses: assault with intent to kill while armed and possession of a handgun during a violent crime, The Associated Press reported.

He will be arraigned on Friday.

More from GlobalPost: Family Research Council shooting (VIDEO)

Corkins was arrested last week after walking into the FRC lobby with a handgun, a box of ammunition and 15 Chick-fil-A sandwiches and opening fire.

It wasn't immediately clear why Corkins had the chicken sandwiches, but the council has steadfastly supported the president of Chick-Fil-A and his staunch opposition to same-sex marriage, Washington TV station WJLA reported.

The FRC is a conservative Christian lobbying group that claims to advocate “faith, family and freedom in public policy and public opinion,” according to its website.

The Southern Poverty Law Center (SPLC), a nonprofit civil rights organization, labeled the FRC as a hate group in 2010 and says the FRC defames gays and lesbians.