The California Department of Corrections and Rehabilitation (CDCR) has named the inmate who allegedly stabbed rapper Tory Lanez 14 times in custody.

LOS ANGELES (AP) — Authorities said Tuesday that a man who attacked rapper Tory Lanez in a California prison is an inmate serving a life sentence for second-degree murder who was previously convicted for an in-prison assault with a deadly weapon.

Prison officials have launched an investigation into the attack on Lanez, who is serving a 10-year prison sentence.