Investigators with the El Paso County Sheriff’s Office are seeking possible additional victims of Brandon Duba, 39, who was arrested in a child sexual assault case in December, according to a news release by the law enforcement agency.

Duba had “extensive access to children” as a former bodybuilding trainer and coach at Vasa Fitness on Palmer Park Boulevard and Elevation Pro Gym. Police believe he may have been teaching children’s classes in Colorado Springs for eight years, according to the release.

An investigation was launched in September after a report of sexual assaults occurring to multiple children, which eventually led to the arrest of Duba on Dec. 18.

Anyone with information or believes they have been victimized can contact the El Paso County Sheriff’s Office tip line at 719-520-7777.

Duba posted a $250,000 bond on Dec. 21 and will make his next court appearance on Wednesday.