Originally published Monday, April 16, 2018 at 05:53a.m.

PHOENIX (AP) — Another court hearing has been scheduled for an Arizona man accused of providing armor-piercing ammunition to the gunman in the deadliest mass shooting in modern U.S. history.

The hearing for Douglas Haig is set for Monday, but has since been moved to May 21.

Haig was charged with conspiring to make and sell armor-piercing ammunition.

Authorities say unfired armor-piercing cartridges found inside the Las Vegas hotel room where Stephen Paddock launched the Oct. 1 attack had Haig's fingerprints.

Haig maintains he legally sold tracer ammunition — which illuminates the path of bullets — to Paddock in the weeks before the shooting that killed 58 people and ended with Paddock killing himself.

The charge centered on armor-piercing cartridges.

Haig hasn't yet entered a plea.