The Latest: Baton Rouge gunman's location unknown for several minutes

The Latest on the shooting of law enforcement officers in Baton Rouge (all times local):4:27 p.m.According to radio traffic, Baton Rouge police answered a report of a man with an assault rifle and were met by gunfire - and for several long minutes, didn't know where it was coming from.The radio exchanges were made public Sunday by the website Broadcastify.Nearly 2½ minutes after the first "Officer down!" report, an officer on the scene is heard saying they don't know the shooter's locatio