A Frenchtown man has been charged with felony attempted child prostitution and six others in the Kalispell area have been arrested in a child sex sting.

Authorities say more arrests are pending from the sting that involved an undercover detective offering girls ages 10 to 15 for sex in exchange for money.

Forty-one-year-old Curtis Edward Foster appeared in Missoula County Justice Court on Friday after police say he tried to set up a sexual encounter with a 13-year-old girl.

Police say a part-time youth pastor is among those arrested.

The Flathead County Attorney's Office says all the men will be charged with felony sexual abuse of children.

The Montana Internet Crimes Against Children Task Force took part in the four-day operation that ended Thursday.