Kosaka Kumiko, 42, was charged with physical abuse as well as helping the priests 'rape' Argentine deaf children

A Roman Catholic nun from Japan has been arrested and charged on suspicion of helping priests sexually abuse children at a school for youths with hearing disabilities in Argentina.

Kosaka Kumiko, 42, was charged with helping the priests with anal and vaginal rapes, fondling and oral sex, which were allegedly committed in the bathrooms, dormitories, garden and a basement at the school in Lujan de Cuyo, a city about 620 miles northwest of Buenos Aires.

The case against Kumiko began after a former student accused her of making her wear a diaper to cover up a hemorrhage after she was allegedly raped by priest Horacio Corbacho.

'I am innocent,' she told judicial officials, who ordered her to be taken into custody at a local women's prison while detectives investigate the alleged crimes.

The nun, who has Argentine citizenship, has also been charged with physically abusing the students - whose torments could only be heard by those abusing them since the other children were deaf - at the Antonio Provolo Institute for children with hearing impairment in northwestern Mendoza province.

But she denied any wrongdoing during an eight-hour court hearing late Thursday.

She was shown being led by police in handcuffs, and wearing her habit and a bullet-proof vest.

At least 24 students from the Provolo Institute have come forward to accuse Corbacho, fellow priest Nicola Corradi and three other men.

The Japanese-born nun, who has Argentine citizenship, allegedly helped the priests with anal and vaginal rapes, fondling and oral sex - which were allegedly committed in the bathrooms, dormitories, garden and a basement at the school in Lujan de Cuyo

At least 24 students from the Provolo Institute came forward to accuse Horacio Corbacho (left) and fellow priest Nicola Corradi (pictured in wheelchair)

The pair were arrested last year after they were charged with sexually abusing at least two dozen students at the Provolo Institute. Horacio Corbacho is pictured with a cross on a wall behind him

The children said the two Roman Catholic priests continuously raped them, beside the image of the Virgin Mary.

Police arrested the five accused men last November, finding a slew of pornographic magazines and about $34,000 in Corradi’s room.

'They always said it was a game: "Let’s go play, let’s go play" and they would take us to the girls’ bathroom,' one of the women who was abused at the Argentine school alleged.

Corradi and Corbacho were arrested last year after they were charged with sexually abusing at least two dozen students at the Provolo Institute.

The nun denied any wrongdoing during an eight-hour court hearing late Thursday

Pictured is the Provolo Institute where the alleged incident took place. It's located in Lujan de Cuyo, a city about 620 miles northwest of Buenos Aires

They are being held at a jail in Mendoza and have not spoken publicly since their arrest.

If found guilty, the accused face up to 50 years in prison. Corradi had earlier been accused in Italy of abusing students at the Provolo Institute in Verona, a notorious school for the deaf where hundreds of children are believed to have been sexually assaulted over the years by two dozen priests and religious brothers.

Advocates for clerical sex abuse have expressed anger that Corradi wasn't sanctioned by the Vatican and allegedly went on to abuse children in Pope Francis' native Argentina.

Three school employees, Jorge Bordon, Jose Luis Ojeda and Armando Gomez, were also arrested and remain in custody.

Investigators are looking into more than 30 testimonies against the priests and teaching staff.