Authorities plan update in probe of Dayton mass shooting

DAYTON, Ohio (AP) — Authorities are working to piece together what led to a mass shooting in Ohio after accusing the gunman's friend of buying body armor used in the massacre.Dayton officials plan an update on the investigation at a news conference Tuesday afternoon.Federal authorities announced charges Monday against a longtime friend of gunman Connor Betts. Ethan Kollie is accused of lying on federal firearms forms while buying a pistol not used in the shooting.They also accused Kollie o