The Pope will celebrate the evening Mass on March 29 at Rome's Regina Coeli prison, the Vatican announced March 20.

Before Mass, the Pope will visit sick inmates in the prison infirmary, the Vatican said. He will celebrate the Mass and wash the feet of 12 inmates in the prison's central rotunda and, afterward, will meet some inmates in the prison's Section VIII, a protected section of the prison for inmates convicted of sexual crimes and other inmates who could be in danger in the general population.

A former convent built in the 1600s, Regina Coeli has operated as a prison since the 1890s. Although the government says the capacity is just over 600 inmates, the monthly census since March 2017 has been more than 900. More than half of the inmates are non-Italians.

The prison is just over a mile from St. Peter's Square.

From the beginning of his pontificate, Pope Francis has celebrated the annual Holy Thursday evening liturgy at a place of particular suffering. His immediate predecessors celebrated the Mass either in either St. Peter's Basilica or the Basilica of St. John Lateran.

In 2013, for his first papal celebration of Holy Thursday, he went to Rome's Casal del Marmo juvenile detention center, where he washed the feet of young male and female offenders. The next year, he presided over the Mass and foot-washing ritual at a rehabilitation facility for the elderly and people with disabilities on the outskirts of Rome. In 2015, he went to Rome's main prison, Rebibbia, where he celebrated the Mass with the male prisoners there and women from a nearby women's detention facility. In 2016, he celebrated with refugees at a center north of Rome. And, in 2017, he went to a prison in Paliano, some 45 miles from Rome.