Texas school shooting a 'horrific tragedy' -Gov. Abbott

STORY: Abbott said the suspect, who the governor identified as 18-year-old Salvador Ramos, was himself killed, apparently by police officers responding to the scene.

"He shot and killed horrifically, incomprehensibly, 14 students and killed a teacher. Mr. Ramos, the shooter, he himself is deceased and its believed that responding officers killed him," Abbott told a news briefing. The governor added that "it is being reported that the subject shot his grandmother right before he went into the school," though had no further information on that incident.

Official details on the circumstances of the midday shooting remained sketchy in the immediate aftermath of the violence, which unfolded at Robb Elementary School in the town of Uvalde, Texas, about 80 miles west of San Antonio.