. >> for more let's go to chauncy glover in baton rouge for us. good morning, chauncy. >> reporter: good morning, diane and kendis. this is where it all started right here at this b-quik gas station and this morning authorities are telling us investigators are thoroughly going through the suspected shooter's e-mails, his computer as well as his social media accounts. they do believe he acted alone but still this morning, there is no motive. [ sirens ] police targeted again. >> one subject all black carrying an ar. >> reporter: officers in baton rouge responding to reports of a gunman dressed in black were suddenly under fire. >> shots fired. officer down. shots fired. officer down. i've got a city officer down. shots fired. i don't know where the subject's shooting from. >> reporter: walking right into the line of fire. >> i'm hit by the car wash. >> i've got two down back. deputy down. deputy down. >> trying to leave the scene he was running but he had an assault rifle in his hand. >> reporter: reinforcements arrive. and a fierce gunfight broke ou