Casio’s rap sheet is a mile long and dates back to 2004, when he was sentenced to life with the possibility of parole for second-degree murder, first-degree attempted murder, personal use of a dangerous or deadly weapon, and inflict great bodily injury, per the CDCR spokesperson. His crimes didn’t stop during lockup either.

Lanez had to be airlifted to a hospital after he was stabbed by another inmate at a California prison this week, his father said Wednesday.

The prison’s investigative unit and the Kern County District Attorney’s Office are investigating, he said.