HOUSTON -- A police investigation was under way and sexual assault charges were filed after a 14-year-old girl was released from high school into the custody of a 35-year-old man who claimed to be her uncle, KPRC Local 2 reported Wednesday.

Harris County Precinct 4 deputy constables said they received the report at Langham Creek High School, located at 17610 FM 529 in northwest county, Tuesday afternoon shortly after the girl was checked out by the man, identified as Leroy Amos.

Deputies told KPRC Local 2 that the suspect had been involved in a sexual relationship with the girl, who is his neighbor, and the two agreed to have him check her out of school. She left with him, and officials said the two had sex.

Parents said that the district told them the girl had been checked out by an uncle, but the parents quickly informed them there was no such uncle. They then determined she had checked out with their neighbor.

Authorities said the girl gave a detailed statement to police, saying she and the man had been having sex for a period of time. Sheriff's department sex crimes detectives filed a felony sexual assault charge against Amos.

Officials with Cy-Fair Independent School District said the school nurse, who was responsible for releasing the student, was suspended and placed on administrative leave on suspicions that she did not follow the district's protocol for releasing students.

Spokeswoman Kelli Durham said the district has a policy where students are only to be released to those named on a list on file with the school.

In October 2004, KPRC Local 2 Investigates began exposing lapses in school district security throughout the Houston area. KPRC did not test Cypress-Fairbanks Independent School District. However, several other districts allowed strangers on hidden camera to enter schools and have contact with children. In one case, KPRC was able to contact a teenage girl and leave a school with her, without being questioned.

Several districts promised to tighten their security in response to the investigation.

KPRC followed up again in the following school year and found some districts had kept their word, but some had not.