DES MOINES, Iowa (AP) — The Roman Catholic bishop of the Des Moines Diocese has turned 75 and submitted his required resignation to Pope Francis. Bishop Richard Pates, who took the post in 2008, announced his intended retirement in the diocesan newspaper, The Catholic Mirror. He says “the past 10 years in the Des Moines Diocese have flown by.”

It’s unclear when the Vatican will announce Pates’ successor. The diocese serves people in 23 counties in Iowa’s southwestern quadrant.