An inmate attacked wife killer Scott Peterson at a California state prison during a dispute over pickleball, according to TMZ.

Sources told TMZ that the altercation happened Sunday in the yard near Peterson’s housing unit at Mule Creek State Prison, about 40 miles southeast of Sacramento.

Peterson reportedly hit the ball directly at another inmate, sparking the assault. The other prisoner attacked him, leaving Peterson “beat up,” but his injuries did not require hospitalization.

Prison officials told PEOPLE that Peterson suffered minor injuries in a March 9 incident. They did not immediately respond to a request for further comment.

As CrimeOnline previously reported, a California jury found Peterson guilty of murdering his wfe, Laci, and their unborn son in 2004.

Laci vanished on Christmas Eve 2002, a month before she was due to give birth. Prosecutors said Peterson strangled or suffocated her before wrapping her in a tarp, fastening her to anchors, and dropping her in the San Francisco Bay.

Peterson claimed he was fishing in Berkeley when his pregnant wife vanished.

The California Supreme Court overturned his death sentence in 2020 after jurors who disagreed with the death penalty (but were willing to impose it) were found to be unfairly dismissed from the case.

There were also issues surrounding prejudicial misconduct after a domestic violence victim was put on the jury.

In 2021, Scott Peterson was re-sentenced to life in prison without parole for the slayings. Later that year, a judge denied his bid for a new trial.

[Feature Photo: FILE – This Nov. 29, 2021 photo from the California Department of Corrections and Rehabilitation, shows inmate Scott Peterson, who was convicted for the 2002 murders of his pregnant wife and unborn son. Peterson is expected to be resentenced to life in prison on Wednesday, Dec. 8, 2021, after the state Supreme Court ruled that his jury was improperly screened for bias against the death penalty. (California Department of Corrections and Rehabilitation via AP, File)]