DUNCAN, Okla. (AP) — The Latest on a shooting at a Walmart in Duncan, Oklahoma (all times local):

2:30 p.m.

Authorities in Oklahoma are emphasizing that the investigation into a fatal shooting outside a Walmart is preliminary, but that it was an “isolated incident.”

Stephens County District Attorney Jason Hicks said during a press conference that there was never an active shooter Monday inside the Walmart in Duncan. The shooting that left three dead, including the shooter, happened in the store parking lot.

Police Chief Danny Ford says the shooter shot a man and woman then turned then gun on h...