A group in Canada:

Calling it a “very grave situation,” the Vatican has excommunicated members of a controversial Quebec Catholic movement, the Army of Mary, for their heretical beliefs that derive from the writings of Marie-Paule Giguère, an 86-year-old mystic who claims to be a reincarnation of the Virgin Mary.
In a judgment delivered to the group on Monday, and announced yesterday, the Congregation for the Doctrine of the Faith ruled that the ordinations of six priests in the Army of Mary this past June were illegitimate, because they were performed by a priest rather than a bishop. As a result, at least one recent marriage, performed by one of these new priests, is now regarded by the Vatican as null.

Further, the ruling says that anyone who participates in the Army of Mary, which has centres in Quebec City and Lac-Etchemin, Que., is in schism with the Catholic Church, and therefore automatically excommunicated.
The group has been in conflict with the Vatican for at least 20 years – its members claim to be fully Catholic, but with extra beliefs – and so it received the ruling with equanimity, calling it the “will of God.”
“In 1958, our foundress received from above, heard from above that she would be crucified by priests and bishops. It’s only the realization today of such a message,” said Father Eric Roy, Superior General of the Sons of Mary and a leading figure in the group. “We cannot go against our conscience.”
Founded as a prayer group in 1971, and recognized by the Archbishop of Quebec four years later, the Army of Mary has been a headache for Canadian Catholic bishops ever since.