A Lawrence man who may be tied to several incidents of open and gross lewdness is facing charges after an 11-year-old girl notified a family member that a suspicious man in a car appeared to be watching her play in the yard, police said.

Jose Asturios Ruano, 29, is charged with open and gross lewdness, according to authorities. Ruano gave police various other names, including ­Inmel O. Zayas, during booking, officials said. Ruano also faces a charge of violating a harassment prevention order from a previous incident.

On Friday, a girl playing in the yard with her cousins ­noticed a black Chevrolet ­Cavalier, allegedly driven by Ruano, “circle the block a couple times before pulling up in front,” according to a police ­report on the incident.

“She walked past the open window of the black Chevrolet” and saw Ruano exposing himself and looking at her, ­police wrote in the report.

The girl ran into the house and told her aunt what she had seen. When the aunt went outside and saw what Ruano was doing, she screamed, “Call the police!” as Ruano pulled away from the curb, police said.

The girl’s aunt was able to get the license plate number and told her niece to text it to police. At the same time, the aunt flagged down her husband, who was already in a ­vehicle, and told him to follow the black Cavalier, police said.

When officers stopped the Cavalier, they found Ruano “with his pants down to his knees,” the report said. The ­officers placed him under ­arrest, police said.

During the booking process, Ruano gave officers multiple names and dates of birth, police said. Ultimately, he was identified, and officers learned that he was wanted on a warrant for violating a harassment prevention order, police said.

Officers confiscated two cellphones and will seek a warrant to search them for ­“pornographic/­sexual; or child porn photographs or video,” police said.

According to police, ­Ruano’s car was reported to police at least twice before: on Thursday and on June 1. In both instances, police said, a male was seen exposing himself in the car.

Ruano pleaded not guilty in Lawrence District Court Monday and was ordered held on $5,000 cash bail for the open and gross lewdness charge and $500 cash bail for violating the harassment prevention order, according to Carrie Kimball Monahan, a spokeswoman for the Essex district attorney.