A former teacher at a Catholic school in Queens who said she had reported the sexual abuse of seven female students by a priest in 1991 now claims that the Diocese of Brooklyn covered it up for more than a decade, allowing more girls to be abused.

The teacher, Linda Porcaro, said on Wednesday that she is coming forward now because the victims, on whose behalf she was speaking, are ready to seek justice. Over the last two months, 23 women who said they were abused by the former priest, Adam Prochaski, have become clients of the lawyer, Mitchell Garabedian, who was portrayed in the Oscar-winning film “Spotlight,” about clergy sex abuse. Most of the women’s claims have been referred to the police.

Mr. Prochaski was based at Holy Cross Roman Catholic Church in Maspeth for nearly 25 years. He is accused of abusing the girls between 1972 and 1994, when they were between the ages 5 and 16.

In New York State, no criminal or civil litigation can take place for most child sex abuse crimes after a victim turns 23. But an exception can be made for rape. The New York Police Department was investigating whether any of the recent allegations qualify for prosecution, a spokeswoman for the Queens district attorney’s office said.