The wife of the gunman who opened fire at Pulse nightclub in Orlando is asking a judge to dismiss one of the counts that she is facing.

Noor Salman is arguing that an obstruction charge against her was filed in the wrong venue. The filing, according to the U.S. Attorney's Office for the Middle District of Florida, cites "lack of venue and accompanying memorandum, of law in support."

The motion requesting the charge to be dropped was filed Monday as people across Orlando and beyond commemorated the one-year mark of the attack that killed 49 people and injured more than 50 others in the deadliest mass shooting in modern U.S. history.

Salman's husband, Omar Mateen, pledged allegiance to the Islamic State group during the attack before authorities killed him in a shootout.

Noor Salman is charged with aiding her husband and obstruction for allegedly misleading investigators.