ollowing the shooting.

The case was initially prosecuted in D.C. Superior Court before being transferred to federal court, a move that allowed prosecutors to pursue charges carrying the possibility of a death sentence, according to the AP. Earlier federal indictments charged Lakanwal with first-degree murder, attempted murder, firearms offenses and related crimes. The newly unsealed superseding indictment expands those allegations to 17 counts.

Lakanwal, who entered the United States after the fall of Afghanistan and had previously worked with U.S.-backed Afghan security forces, has remained in custody since the shooting, per the AP. His attorneys entered not guilty pleas on all counts Tuesday.

Dig deeper:

The shooting prompted a major federal investigation involving the FBI and Metropolitan Police Department and drew national attention because of its proximity to the White House and the military status of the victims.

What we don't know:

Federal prosecutors have not publicly announced whether they will seek the death penalty, but the death-eligible federal charges mean capital punishment remains a possible outcome as the case proceeds through the Justice Department's review process.

A trial date has not yet been announced.