Exorcism
In Catholic practice the person performing the exorcism, known as an exorcist, is an ordained priest. The exorcist recites prayers according to the rubrics of the rite, and may make use of religious materials such as icons and sacramentals. The exorcist invokes God—specifically the Name of Jesus—as well as members of the Church Triumphant and the Archangel Michael to intervene with the exorcism. According to Catholic understanding, several weekly exorcisms over many years are sometimes required to expel a deeply entrenched demon.
Tanacu exorcism
The Tanacu exorcism was a case in which Maricica Irina Cornici, a mentally ill nun at the Romanian Orthodox Church monastery of Tanacu in Vaslui County, Romania, was killed during an exorcism led by priest Daniel Petre Corogeanu and four Orthodox Christian nuns who were a part of the Order of the Holy Trinity. The case was widely publicized in the Romanian media and, following a lengthy trial, the priest was sentenced on appeal to 7 years, one nun to 6 years and the other three nuns to 5 years. They were all found guilty of deprivation of liberty resulting in the victim's death. They received a relatively lenient sentence, compared to the original desire of the prosecution who sought life imprisonment for the priest. Many of Tanacu's residents, including Cornici's brother, believed her to have suffered from demonic possession. The exorcism took place in June 2005.