Haig has acknowledged selling 720 rounds of tracer ammunition to Paddock in the weeks before the shooting that killed 58 people. Tracer bullets contain a pyrotechnic charge that illuminates the path of fired bullets so shooters can see whether their aim is correct.

The criminal charge involves another type of ammunition — armor-piercing bullets.

The documents don’t say if any ammunition tied to Paddock was used in the attack. Las Vegas police wouldn’t say whether armor-piercing bullets were used in the shooting but referred to a preliminary report saying some rifle magazines were loaded with armor-piercing ammunition.