Justice Department officials are considering additional charges against Elias Rodriguez, the Chicago man accused of killing two Israeli Embassy staffers on Wednesday evening in Washington, D.C., Fox News has learned. 

Rodriguez, 31, has already been charged with the murder of foreign officials, a federal capital offense, along with multiple firearm-related counts and two counts of first-degree murder.

This is a developing story. Please check back for updates.

Fox News' Sarah Rumpf-Whitten contributed to this report.