The two journalists killed during a live TV report were both shot in the head.
Reporter Alison Parker, 24, and cameraman Adam Ward, 27, died of gunshot wounds to the head and body, a Virginia coroner said.
Their former colleague Vester Flanagan shot himself when police caught up with him three hours from the scene of the killings.
Newsreaders have held a moment of silence at the station where two journalists who were shot dead on Wednesday worked.
Twenty-four hours on from the killings of WDBJ7 reporter Alison Parker and cameraman Adam Ward, news anchors on the show held hands and asked viewers to join them in a moment of reflection.
In emotional scenes, one member of the team shed tears as they remembered their colleagues.
Gunman Vester Flanagan died in hospital after shooting himself.
Vicki Gardner, who was being interviewed live on-air when a gunmen shot two journalists has been released from hospital.
In a 23-page fax, Vester Flanagan said he was a "human powder keg waiting to go boom" before he slayed Alison Parker and Adam Ward.
Police confirmed Vester Flanagan shot himself hours after killing two former colleagues Alison Parker and Adam Ward on live TV.