Officials at an Orlando, Florida, hospital say the only survivor of the Pulse nightclub massacre who was still hospitalized has been released.

Orlando Health announced on its verified Twitter account Tuesday afternoon that all 35 victims who had been hospitalized at Orlando Regional Medical Center have now been discharged.

The condition of the last hospitalized victim had been upgraded from critical to guarded on Aug. 16.

Two days after the June 12 shooting, six victims had remained in critical condition. Despite doctors' fears that the death toll could go higher, all of those six patients have survived.

The attack killed 49 people and injured more than 50 others, making it the deadliest mass shooting in modern U.S. history. The gunman, Omar Mateen, was killed by police after a three-hour standoff.