JACKSONVILLE, Fla. -- A registered sex offender accused of claiming to be an investigator with the Florida Department of Children and Families in order to speak with a 9-year-old girl was arrested Tuesday on several charges.

According to the arrest report, Donald James Smith, 53, called the girls' family first in Middleburg, then in Callahan, on June 30 asking to speak to the girl.

Police said Smith called the girl's teenage brother's cell phone asking to talk to his sister and identifying her by name.

The girl's brother then gave Smith his mother's phone number instead.

"He called me and asked if he could speak to (her), and I asked him who he was, and he said he was with the Department of Children and Family and he had allegations against my daughter being sexually molested by her grandfather and her brother," the girl's mother said.

She continued to press Smith for more information, but he told her it was a part of the investigation. Smith then contacted the girl's grandmother demanding that he speak to the girl on the phone.

Her grandmother said she would allow the girl to speak to him if it was a three-way call with the child's mother.

After a 20-minute call, the girl was "very upset and crying." The 9-year-old later told investigators that the caller asked her questions about her private parts and where she lived. She said he also threatened during the call to arrest her mother, father and grandparents.

When the grandmother got the man on the phone, he said the mother was not included on the call because she was "under investigation." The man said the child needed to be medically examined concerning possible sexual abuse and if they told anyone about their conversation, "someone would go to jail."

The grandmother told police she agreed to meet the man at McDonald's restaurant at the state Road A1A exit of Interstate 95, but the man never showed up.

According to the arrest report, when the grandmother obtained the phone number from caller ID and called him the next day, he identified himself as Donald Smith, but claimed he was a crack addict and said he had rented his cell phone to someone the previous day. But the grandmother and the girl both identified the voice as the man who make the initial call.

That day, the girl's mother called the National Center for Missing and Exploited Children to file a complaint.

The mother told Channel 4 she has no idea how Smith knew her daughter's name or got their telephone numbers.

"We've never seen him. She has her father's last name," the girl's mother said. "We don't know how he got her number, how he knows her, nothing."

She said the girl, now 10, remains worried that the man will hurt her and is terrified of staying alone and has trouble sleeping.

During the course of the investigation, detectives learned that Smith was convicted for attempted kidnapping and lewd and lascivious assault on a minor as a result of two incidents in 1992. Police obtained cellular phone records that showed Smith's phone had placed the calls.

When questioned by police, Smith said he was coming off a three-day crack binge and could not remember specifics about what occurred. He also said that several people had access to his telephone, but he has no idea who or how many people used it.

Smith was arrested and charged with Smith on charges of impersonation of a public employee, child abuse and making a verbal threat. He was being held in the Duval County Jail on $262,512 bond.