Professional gamer who killed teenage rival with a sword filmed her bloodied corpse after murder

A bizarre 52-page manifesto called "Meu Dicionario" (My Dictionary) was seized by police who revealed how the teenager "planned an attack against Christianity" in Brazil

Guilherme Alves Costa during his arrest (

Image: Newsflash)

A professional gamer who killed a teenage rival then laughed while filming her bloody corpse has been sentenced to 14 years behind bars.

Horrifying footage shot by Guilherme Alves Costa, 18, shows victim Ingrid Oliveira Bueno da Silva, 19, lying on the floor of her bedroom in a pool of blood.

What appears to be a sword hilt can be seen emerging from the victim's stomach.

Alves Costa - known professionally as Flash Asmodeus - had met Ingrid online through the Call of Duty Mobile game a month before the crime.

He apparently lured the teenager to his home in Sao Paulo, Brazil, where he stabbed her to death on February 22 last year.

Ingrid Oliveira Bueno da Silva, 19, known as Sol, who played Call of Duty professionally (

Picture:

news flash)

Guilherme Alves Costa recording himself after killing Ingrid (

Picture:

news flash)

Seemingly inspired by the shooter video game, he later filmed a video of the bloody sequels, in which he can be heard saying, "Look,...