A Hamilton police sergeant who led the service's human trafficking unit is facing multiple sexual misconduct charges, which have been laid under the provincial Police Services Act.

Sgt. Derek Mellor, a 14-year veteran with the Hamilton police, is alleged to have engaged in, or attempted to engage in, sexual activity with various witnesses, potential witnesses and other individuals involved in his investigations.

Mellor is also alleged to have sent photographs and videos of a sexual nature to victims’ services workers whom he met while working as a human trafficking investigator.

Documents provided to the CBC state that Mellor used his "character and position as a member of the Hamilton Police Service for private advantage."

Mellor has been suspended since late last year, when the allegations surfaced.

In total, Mellor is accused of nine counts of discreditable conduct, one count of insubordination and one count of corrupt practice for incidents that are alleged to have occurred between May 2011 and November 2012.

Two of the counts allege Mellor engaged in an inappropriate sexual relationship with a witness or potential witness.

At a Police Services Act proceeding at the Hamilton Central Police Station, Mellor reserved a plea. The proceedings are scheduled to resume on July 30 at 10 a.m. 

The Police Services Act is a provincial act governing the conduct of Ontario police officers.

It is alleged that between April 1, 2012 and Aug. 31, 2012, Mellor engaged in "sexual activity" with two different individuals,  who were witnesses or potential witnesses in a human trafficking case Mellor was investigating.

Hamilton police also allege that Mellor attempted to "engage in an inappropriate relationship" with three different women,, whom he met in his capacity as a human trafficking investigator.

Mellor is also accused of sending photographs and videos of a sexual nature to a witness in a human trafficking case, and two women employed with a victims services agency between.

Additionally, Mellor is accused of not taking notes in the course of his duties, and using his position as a member of the Hamilton Police Service for private advantage.

At his first appearance proceeding, Mellor, through an attorney, reserved a plea.