. >> reporter: 8-year-old darrion griffith escaped with only bumps and bruces. >> glad you're safe, buddy. >> reporter: it's unclear why the driver lost control of the bus. tonight parents are gathering anxiously praying for their young children. tonight in chattanooga the authorities tell nbc news there are multiple fatalities. there are reports there could be a dozen dead children in this accident. the medical examiner indeed cooperating with the investigation. lester? >> absolutely horrible, kerry, thank you. >>> there are late-breaking developments for a hunt in the suspect in the ambush shooting style death of a texas police officer. the 50-year-old san antonio pd detective was one of four law men gunned town in three states in a 24-hour period. it has been an exceptionally deadly year for the nation's lanf officers. jacob rascon is in san antonio with the latest. >> reporter: tonight after a two-day manhunt police have captured the man they say executed one of their own. the suspect seen in new surveillance video pacing nervously outside san antonio police headquarters sunday mornin

. >> reporter: 8-year-old darrion griffith escaped with only bumps and bruises. >> glad you're safe, buddy. >> reporter: it's unclear why the driver lost control of the bus. tonight parents in chattaa school, gathering anxiously praying for their young children. tonight in chattanooga the authorities tell nbc news there are six like so many as to school buses in this country there were no seat belts. >> thank you, kerry. >>> there are late-breaking developments for a style death of a texas police officer. the 50-year-old san antonio pd detective was one of four law men gunned town in three states in a 24-hour period. it has been an exceptionally deadly year for the nation's law enforcement officers. jacob rascon is in san antonio with the latest. >> reporter: tonight after a two-day manhunt police have captured the man they say executed one of their own. we arrested otis tyrone mccain. >> reporter: the suspect seen in outside san antonio police headquarters sunday morning, walking inside at 7:45 for just 20 seconds. >> he asked a question, the clerk said that they would help him with

. >> reporter: 8-year-old darrion griffith escaped with only bumps and bruces. >> glad you're safe, buddy. >> reporter: it's unclear why the driver lost control of the bus. tonight parents are gathering anxiously young children. tonight in chattanooga the authorities tell nbc news there are multiple fatalities. there are reports there could be a dozen dead children in this accident. the medical examiner is now at the scene. the authorities say that the bus driver is indeed cooperating with the investigation. lester? >> absolutely horrible, kerry, thank you. >>> there are late-breaking developments for a hunt in the suspect in the ambush shooting the 50-year-old san antonio pd detective was one of four law men gunned town in three states in a 24-hour period. it has been an exceptionally deadly year for the nation's law enforcement officers. jacob rascon is in san antonio with the latest. >> reporter: tonight after a two-day manhunt police have captured the man they say executed one of their own. the suspect seen in new surveillance video pacing nervously outside san antonio police headquar