After the shooting at an Oklahoma hospital, the Diocese of Tulsa has asked for prayers.

The Diocese of Tulsa has asked for prayers for all those affected in a mass shooting near the city’s Saint Francis Hospital that has left at least four people dead.

“Bishop Konderla, several priests, and the Religious Sisters of Mercy are on site to offer pastoral support to those affected by today’s shooting at Saint Francis Hospital. Please join us in prayer for all involved. Sacred Heart of Jesus, have mercy on us,” Adam Minihan, communications director for the diocese, told CNA June 1.

The shooting, which occurred Wednesday afternoon inside the Natalie Building on the south side of the Saint Francis Hospital campus in Tulsa, claimed four lives, including the shooter, according to the Tulsa Police Department.

In a Facebook post, the department stated that “We know there are multiple injuries, and potentially multiple casualties.”

It said its officers were “going through every room in the building checking for additional threats.”

Saint Francis Hospital is the centerpiece of Saint Francis Health System, according to its website “is a Catholic, not-for-profit health system wholly governed and operated in Tulsa, Oklahoma whose mission is to extend the presence and healing ministry of Christ to all who seek its services.”