Brock Turner, a former Stanford University student who was convicted in March of sexually assaulting an unconscious woman outside a Stanford fraternity house, registered as a sex offender in Ohio on Tuesday morning, four days after his release from a Northern California jail.

Turner’s parents were by his side as he filled out the paperwork at the Greene County Sheriff’s Office, a process that took about 20 minutes, NBC News reported. While there, Turner’s mother tried to shield her son’s face with a white sweater, and Turner did not speak to reporters, according to NBC.

The 21-year-old’s entry in the state’s sex-offender registry soon appeared on the website for the Ohio Attorney General’s Office. Turner listed an address in Bellbrook, Ohio, for a house that belongs to his parents, according to public records.

Turner must register as a sex offender for life. Under Ohio law, his neighbors will receive postcards letting them know that a sex offender lives in their community, which is about 15 miles southeast of Dayton.

As a Tier 3 sex offender — the highest level — Turner must re-register with the sheriff’s office every 90 days, Greene County Sheriff Gene Fischer told The Washington Post.

Each time, the sheriff’s office will take a new photo, confirm the address and send a deputy to Turner’s home to do a follow-up check, Fischer said.

Turner was released from jail in Santa Clara County on Friday after serving three months of his six-month sentence.

The former Stanford swimmer was convicted this year of three felonies, including assault with the intent to commit rape.

The Turner case gained nationwide attention when his victim, known only as “Emily Doe,” wrote a 12-page impact statement calling his jail sentence “a soft timeout.”

“You took away my worth, my privacy, my energy, my time, my safety, my intimacy, my confidence, my own voice, until today,” she wrote, adding: “The damage is done, no one can undo it. And now we both have a choice. We can let this destroy us, I can remain angry and hurt, and you can be in denial, or we can face it head on. I accept the pain, you accept the punishment, and we move on.”

Turner’s sentence was widely criticized for being too lenient and sparked public outrage, as well as a petition to recall California Superior Court Judge Aaron Persky.

The case also prompted lawmakers in California to pass legislation imposing mandatory prison sentences for those convicted in sexual assault cases — including instances in which the victims were unconscious or too intoxicated to consent.

The bill — A.B. 2888 — is awaiting Gov. Jerry Brown’s (D) signature after it was approved by both California’s Senate and State Assembly with overwhelming support. The bill, which the governor has until Sept. 30 to veto or sign, would require judges to choose an appropriate prison term rather than opt for probation or a stint in jail.

Lindsey Bever contributed to this article.