The founder and ex-CEO of a national organization for homeless children has been arrested in Colorado for allegedly abusing a minor under his supervision, CNN reports.

Richard Lee Koca Sr. was detained Saturday in Aurora, Colo., and formally charged Monday with one count of sexual assault on a child by one in a position of trust.

Police did not say whether the youth was involved in StandUp for Kids, the nonprofit group Mr. Koca founded in 1990, but are seeking public and media help in determining whether there are other possible cases from the 69-year-old suspect’s decades of work with his own group and the Boy Scouts.

StandUp for Kids interim director Justine Madison said in a statement Tuesday that Mr. Koca retired as the charity’s CEO in 2010 and was removed from its board of directors following his arrest. The group’s 2010 tax filing listed revenue of $1.7-million and said it provided food, clothing, transportation, and other services to more than 15,000 youths through street outreach, drop-in centers, and alternative schools.