Texas gunman warned online he was going to shoot up school

The gunman who massacred 19 children and two teachers at an elementary school in Texas had warned on social media minutes before the attack that he had shot his grandmother and going to shoot up a school, the governor said Wednesday.

Texas school shooting: What we know about the victims in Uvalde

Police have not formally identified the victims from the mass shooting at a Uvalde, Texas elementary school, but some family members are sharing pictures. Here's what we know so far about the 19 children and two teachers who were killed.