The man accused of killing two people in a mass shooting at an Ohio warehouse Tuesday night said in court Thursday he did not resist arrest and was ordered held on a $20 million bond.

A warehouse worker said in a frantic 911 call that he was shot in the neck and then took the gun from a co-worker after he had shot several others. Two people died and four were injured in the Ohio shooting that sent panicked employees fleeing.

A second victim succumbed to their injuries two days after an employee is suspected of opening fire at a warehouse, police say.