Slitting

He applied a tourniquet before slitting his wrists.

After the crash, Mr. Smith quickly fled the scene and attempted suicide at his home by slitting his wrists and shooting himself with a pellet gun.

[…] the Jack the Ripper murders in Whitechapel, during which prostitutes in the poor areas of 1880s and 1890s London became the victims of an infamous string of throat slittings.