Demon
The contemporary Roman Catholic Church unequivocally teaches that angels and demons are real beings rather than just symbolic devices. The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance, which any Christian can offer for themselves or others.
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.