A Long Beach man who forced a 17-year-old girl into prostitution and tattooed her chest with his street name was sentenced today to 10 years in federal prison, according to the Los Angeles District Attorney’s Office.

Ralph “Mac Wimp” Allen Jackson, Jr. admitted in court to driving the girl and three adult women to areas in Long Beach known for prostitution, ordering them to engage in sex acts for money, giving them quotas to meet each day and forcing them to work 12 hours a day with only one meal break. He pleaded guilty in 2013 to conspiracy to engage in sex trafficking of a minor.

Jackson was also ordered to serve 20 years under supervised release after he gets out of federal prison, and must register as a sex offender.

Police said when they encountered the 17-year-old girl, she had the words “Mac Wimp’s bitch” tattooed across her chest.

According to the affidavit filed in support of the criminal complaint, the underage victim told investigators that she met Jackson in March 2013 for dinner, following a series of phone calls and text messages.

When the girl told Jackson she was 17, she and Jackson entered an agreement that this would be their “secret,” before Jackson forced the girl into prostitution.

“Forcing anyone, much less a child, to prostitute themselves from morning until night with no rest, little food and threats of physical harm is not only criminal—it is morally reprehensible,” said Homeland Security Investigations Special Agent Claude Arnold. “That what amounts to modern slavery occurs here in the 21st century is unconscionable.”

In an attempt to only get a five-year sentence, Defense Attorney Reuven Cohen said the girl “acted immaturely” and “was on the streets” before and after she worked for Jackson in June 2013.

Cohen also said Jackson was not a ringleader and “walked right into this enterprise,” which involved Jackson’s girlfriend, described as an “unindicted co-conspirator.”

Jackson also argued that he was the father of two twin girls and a college-age son, and he needed to be there for them.

“I’m very active in my kids’ life—and I just blew it,” he said, adding that he became involved in the prostitution ring thinking he was “helping a friend.”

“I wish I could say sorry to the women,” Jackson said.

City News Service contributed to this report.