Texas school shooting: Authorities provide timeline of rampage, confirms gunman’s grandmother is alive

Victor Escalon, state Department of Public Safety South Texas regional director, provided an update Thursday on the investigation into the Robb Elementary School mass shooting and provided a detailed timeline on how the tragedy unfolded. He also confirmed that the gunman's grandmother was alive and stable after previous reports that he killed her. He requested patience as the investigation continues, stressing they want to provide facts and not deal with rumours.