Colombian Cardinal Dario Castrillon Hoyos, a longtime Vatican official, died May 18 in Rome at the age of 88.

Cardinal Castrillon formally retired a few days after his 80th birthday as president of the Pontifical Commission “Ecclesia Dei,” the commission charged with outreach to the traditionalist Society of St. Pius X and assistance to Catholics attached to the pre-Vatican II liturgy.

For much of the time the cardinal headed the commission, he also was serving as prefect of the Congregation for Clergy.

St. John Paul II had named him pro-prefect of the office in 1996 before naming him to the College of Cardinals two years later. Cardinal Castrillon served as prefect until 2006.

The cardinal’s death leaves the College of Cardinals with 213 members, 115 of whom are under the age of 80 and therefore eligible to vote in a conclave to elect a new pope.