A 30-year-old man was convicted June 3 of punching a pregnant woman in the stomach, groping another woman and attempting to rob another woman of her fitness tracker in a series of attacks in Tustin two years ago.

Sean Anthony Aguilera was convicted of attempted robbery and assault with force likely to produce great bodily injury, both felonies, as well as single misdemeanor counts of battery and groping. He is scheduled to be sentenced June 2

Mr. Aguilera pleaded guilty in April but later changed his mind because he did not realize he would have to register as a sex offender.

Police were called at 7:51 p.m. Oct. 21, 2022, to a gas station at 14244 Newport Ave., according to prosecutors. A victim who was “distraught'‘ and ”visibly shaking and crying uncontrollably’‘ said she was going to get a “booster shot’‘ after visiting her aunt when Mr. Aguilera approached her from behind saying, ”Jason,’' prosecutors said in a trial brief.

The woman said she didn’t know anyone by that name, prompting the defendant to respond, “Yes, you do,'' prosecutors said.

Mr. Aguilera “lunged at her and threw his arms forward,'' and then groped her private parts, prosecutors said. The woman shouted for help and managed to wriggle away as he slapped her on the buttocks, prosecutors said.

The woman ran for help and got someone to call 911 for her, prosecutors said.

At about 8:16 p.m. that same night, police were sent to 14802 Newport Ave. in response to reports of a woman who was eight months pregnant who said Mr. Aguilera punched her in the stomach, prosecutors said.

The woman was walking with her mother in the alley behind her apartment building to take out the trash when the defendant, who was standing on an electrical box with a large piece of wood, hopped up onto a carport, prosecutors said.

When the woman advised him to be careful he allegedly punched her in the stomach, then left when she asked someone to call 911.

Mr. Aguilera was arrested at about 8:20 p.m. and was identified by the victims, prosecutors said.

Three days later, another woman came forward when she saw news reports about Mr. Aguilera. She said she was on a walk at about 6:30 p.m. Oct. 21, 2022, when the defendant approached her on a skateboard and “attempted to grab her black Fitbit from her wrist and tugged on it multiple times,'' prosecutors said.

Mr. Aguilera told police he slapped the woman on the butt because he had been dared to by a friend, prosecutors said. He denied punching the pregnant woman, prosecutors said.

Previously, Mr. Aguilera pleaded guilty to felony vandalism and misdemeanor criminal threats Nov. 19, 2021, and was sentenced to 16 months in jail, according to court records. He was placed on two years’ probation, but violated terms of probation and was jailed for 60 days, according to court records.