A former teacher and gymnastics instructor is accused of sexually assaulting an underage relative.

Dean Allen McCollum, 44, was arrested Wednesday for abuse that reportedly happened between approximately 2001 and 2006.

He's charged with sexual assault on a child, sexual assault on a child by one in a position of trust and aggravated incest

McCollum has worked as a teacher at Bauder Elementary School and a coach at Mountain Kids Gymnastics in Fort Collins.

Anyone who feels they may have been victimized by him is encouraged to contact Fort Collins Police Detective Tessa Jakobsson at 970-221-6575.

9NEWS has requested the mug shot for McCollum and will update the story when we receive it.