Convicted double murderer Scott Peterson, whose 2004 trial over the killing of his eight-months pregnant wife captured national attention, was beaten by a fellow prison inmate in a dispute involving pickleball,

The inmate was reportedly set off by Peterson smashing the ball directly at his body during the match — and aired his grievances in the form of hooks and jabs.

Convicted killer Scott Peterson suffered minor injuries at California's Mule Creek State Prison on Sunday, March 9, prison officials confirm with PEOPLE.