The pope wrote a letter to young people, saying the church wants "to listen to your voice, your sensitivities and your faith, even your doubts and your criticism."

The group said it "is completely legitimate and authorized" to investigate the matter and inform the pope.

Families need something long lasting when coping with the heartbreaking wounds of losing their homes and loved ones, the pope said.

Although the total was slightly higher from the 3.2 million visitors received by Pope Francis in 2015, for a jubilee year it still fell short of the 5.9 million pilgrims who visited in 2014.

A tractor-trailer veered into a crowded Christmas market in Berlin and plowed through bystanders, killing 12 people and wounding nearly 50.

Allegations surfaced in July in a report by Australia's ABC featuring several people who accused Cardinal Pell of sexual assault.

Pope Francis asked people to follow the example of St. Therese of Lisieux.

Pastors who seek personal gain are not upholding their duty, Pope Francis said.

A new social economy is required to meet the day's most pressing needs, said Ghanaian Cardinal Peter Turkson.

To conclude the Year of Mercy, Pope Francis will hold celebrations for the imprisoned and people experiencing homelessness.