Camden County Prosecutor Warren W. Faulk reported a former teacher from Triton High School pleaded guilty Thursday to charges related to inappropriate activities with a student.

Nick Martinelli, M/28, of the 300 block of Windsor Drive in Cherry Hill, pleaded guilty Thursday to 4th degree Hindering Apprehension before Superior Court Judge Thomas Brown. Martinelli immediately resigned his position with the Black Horse Pike School District. As part of his plea agreement, Martinelli will be sentenced to a term of probation to be determined by the judge and will forfeit his teaching certificate in New Jersey. Martinelli must also not make contact with the victim in the case. Martinelli will be sentenced on April 12.

Martinelli admitted in court Thursday to attempting to impede the progress of an investigation into an improper relationship he maintained with a Triton High School student by telling the student to keep their association secret from investigators.

Martinelli was not charged with any child abuse or sex crime offenses because the female student he was involved with was over the age of 18 at the time.

Two other teachers, Jeff Logandro, M/32, of the first block of Nicole Court in Blackwood, and Daniel Michielli, M/27, of the 2500 block of Wimbledon Way in Blackwood, each pleaded guilty to a count of 3rd degree Conspiracy to Commit Official Misconduct in February. They are scheduled to be sentenced Friday, 1:30 p.m., in courtroom 36 of the Camden County Hall of Justice.

Catherine DePaul, F/55, of the 500 block of Hancock Court in Woodbury, the high school’s former principal, was sentenced in February to a disorderly persons offense, Failure to Report a Crime.

In April 2012 a female student told a substitute teacher at the school that there were teachers engaging in sexual contact with students. The substitute reported this information to DePaul, who in contravention to her legal responsibilities, failed to contact local law enforcement or the state Division of Children and Families and inform either of the allegations.

One other defendant in the case is still facing charges.

Jernee Kollock, F/39, of the 100 block of Bert Road in Williamstown, a vice-principal at the school, is charged with Official Misconduct.

All persons charged with criminal offenses are innocent unless and until convicted in a court of law.