Uvalde teacher closed propped-open door before shooting, Texas officials say

Door did not automatically lock, contradicting investigators' earlier account in which they said teacher had propped open door

A teacher did not, as previously stated, leave a door propped open with a rock during the massacre at Robb elementary school in Uvalde, Texas, last week, but closed it before the attacks began - only for the door to not automatically lock, Texas state investigators said.

The gunman used the door to get inside, where he killed 19 students and two teachers.