Criminal investigation

Surveillance video of Orlando attack shows shooter firing at those already wounded

Surveillance footage from inside the Orlando club the night of the rampage shows Omar Mateen firing at people, stopping and then shooting again those who were already wounded, said officials who have viewed the evidence.

The video suggests "he was making sure anybody who was shot was dead," said one official, who like others spoke on condition of anonymity because the investigation into the shooting is still ongoing.

The footage corroborates eyewitness accounts that Mateen quickly shot through a 30-round magazine and then reloaded, proceeding to empty another 30 rounds into the wounded sprawled in front of him.