Police say the assaults happened in the Monkey Lane area of Cookstown in the early hours of Saturday.
Ross Willetts, 22, died after the collision near Cookstown early on Friday morning.
The single-vehicle crash on Drumenny Road was reported to police at about 03:30 BST.
The company said it hoped to redeploy the 82 staff who work at the factory.
Three teenagers died outside the Greenvale Hotel in County Tyrone on St Patrick’s Day.