INDIANAPOLIS (AP) — The former employee who shot and killed eight people at a FedEx facility in Indianapolis legally bought the two rifles used in the attack despite red flag laws designed to prevent such purchases, police said.

A trace of the two guns found by investigators at the scene revealed that suspect Brandon Scott Hole, 19, of Indianapolis, legally bought the rifles last July and September, officials with the Indianapolis police said Saturday.

The police did not say where Hole bought what they described as "assault rifles," citing the ongoing investigation, but said he was seen using...