Catholics in Puerto Rico are rallying around an archbishop who is reportedly under pressure from the Vatican to resign.

Roberto Gonzalez Nieves has not confirmed that he is being asked to step down as leader of the Catholic church in the U.S. island territory. However, he has asked parishioners to pray for him and stop sending letters on his behalf to the Vatican.

Church members planned a demonstration Wednesday to show support for the archbishop. A letter allegedly written by Gonzalez to the Vatican was published by local radio station Noti Uno. In it, he defends himself against accusations that he protected priests accused of sexual abuse and meddled in local politics.

The authenticity of the letter hasn't been confirmed, and the Vatican has not responded to requests to comment.