The man who shot dead two journalists on live TV in Virginia reportedly sent a fax to ABC News after the attack, saying that he was a "human powder keg".
According to the BBC, Vester Flanagan, who had been dismissed by the same station, WDBJ7, killed himself after a police chase.
A man said to be Flanagan said in the fax that he suffered discrimination and bullying for being gay and black.
The White House said that the attack showed the need for better gun control.
The two people killed were WDBJ7 reporter Alison Parker and cameraman Adam Ward.
Station manager Jeff Marks said that Flanagan was an "unhappy man" who had to be escorted from the WDBJ7 building after being dismissed in 2013.
