JACKSONVILLE BEACH, Fla. -

A Jacksonville Beach mother accused of trading sex with her 6-year-old daughter in exchange for drugs, and two men who police said had sex with the girl are all in custody, and a third man is being sought.

The mom, Dalina Nicholas, 39, was arrested in Columbus, Ga., and is awaiting extradition to Jacksonville Beach.

Quinn Brooks, 56, and John Hagans, 47, were booked into the Duval County Jail on charges of rape. Police said they're looking for 51-year-old Norman Thompson in connection with the rape.

Jacksonville Beach police said the crimes took place in mid-January. According to police reports, the girl gave a detailed account of what she said the men did to her, saying some of the acts were physically painful.

Detectives said they started investigating after a homeless man flagged down an officer and told him that he knew of a young girl getting sexually abused by multiple men and it had been going on for the last two years.

He then told police Nicholas "would allow different men sexual access to the victim in exchange for drugs and/or money while at her house," according to the police reports.

The man told police he "witnessed Nicholas tell the victim to take off her clothes and lay on a mattress in the living room, saw the suspect give Nicholas $20 and then perform oral sex on the victim," according to the reports.

The man said he told detectives because the girl asked him to help her "make it stop," according to the reports.

Nicholas told police she had no idea what was going on and said she was a victim of sexual abuse as a child as well.

The Florida Department of Children and Families said the girl and her 1-year-old brother were removed from the home and were with a relative and receiving counseling from a team of doctors. DCF said it believes only the girl was a victim of sexual abuse.

"Our primary concerns at DCF are the safety and well-being of this child," Harrell said. "This child is now in a safe environment with relatives. And additionally, our partners at the Children's Home Society are providing services to help this child, which include therapy and counseling."

Harrell said the therapy and counseling may need to continue for several years.

"This girl has been through a very rough ordeal and we obviously want to make sure that she's getting all of the services and assistance that she needs," Harrell said. "If there's going to be any situation where further details are needed about what happened to this child, they can refer back to this documented interview and that will spare this child the pain hopefully of having to go on the stand (at a trial)."

Nicholas' Jacksonville Beach neighbors told Channel 4 they never saw any police activity at her home and could never have imagined what was going on.

"It's disgusting. I can't even fathom the thought," said April Wishman. "I have a 3-year-old and a 2-year-old. I can't fathom it."

Hagans has been arrested at least 12 times in Duval County; Brooks has been arrested seven times. Both were being held without bail.

Nicholas has a prior arrest on a misdemeanor marijuana charge.

Jacksonville Beach police were expected to head to Muscogee County, Ga., to pick Nicholas up sometime this week.

If you have any information on Thompson's whereabouts, call Crime Stoppers at 866-845-TIPS.