A volunteer with the Boy Scouts of America has been charged with attempting to have sex with a minor. The United States Attorney's Office says 50-year-old Michael Engler was arrested during an undercover operation that found Engler allegedly agreeing to meet a person he thought was a 14-year-old male in order to engage in sexual activity. The investigation remains open because of Engler's affiliation with the Boy Scouts. Authorities are concerned there might be additional victims. If you have any information about Engler, please contact the St. Louis County Police Department at 314-889-2341.