Brock Turner, the ex-Stanford swimming star convicted of sexually assaulting an unconscious woman on campus, formally registered as a sex offender Tuesday in Xenia, Ohio.

Turner, now 21, served three months of a six-month sentence shortened by “good behavior” while in California’s Santa Clara County Jail. The Ohio native, expelled from the prestigious university before completing his freshman year, was released Friday and returned to his parents’ Bellbrook home.

On Tuesday, he reported to the Greene County Sheriff’s Office to complete the paperwork. Turner will be registered as a sex offender for life and must serve three years probation.

Turner, who claimed the victim consented, could have faced more than a decade in prison on the convictions — assault with intent to commit rape of an intoxicated/unconscious person, penetration of an intoxicated person and penetration of an unconscious person— stemming from the attack next to a trash bin outside a fraternity party.

The relatively light sentence set off a national firestorm, and the sentencing judge faces a recall effort in California.

The assault, which took place in January 2015, was halted by graduate students who came upon the scene on bicycles. Turner fled, but was chased down and held until police arrived.

The victim’s impact statement noted Turner’s registration as a sex offender “doesn’t expire. Just like what he did to me doesn’t expire, doesn’t just go away after a set number of years. It stays with me, it’s part of my identity, it has forever changed the way I carry myself, the way I live the rest of my life.”

The California Legislature recently sent Gov. Jerry Brown a bill that would, if signed, toughen penalties for attacks on unconscious victims.

In Ohio, protesters rallied outside the Turner home Friday, some armed. Local firefighters used hoses to blast away chalk messages from the street, sidewalk and driveway, The Dayton Daily News reported. Among the scrawlings: “Its your job to hold your son/self responsible so he/you don’t hurt my daughters.”