South African police are investigating abuse allegations at the Oprah Winfrey Leadership Academy, the talk-show host's $40 million school for disadvantaged girls near Johannesburg.Oprah Winfrey, who founded the school this year, has apologized in connection with the incident.Investigators would not say whether the allegations involve physical or sexual abuse, but said no charges have been filed. The academy's CEO, John Samuel, said in a statement earlier this month that an internal inquiry was launched based on a claim of misconduct involving a dormitory parent.According to an article in The Cape Argus, a Cape Town newspaper, a student said a dorm parent grabbed her by the throat and threw her against a wall. Girls at the school also said the matron swore and screamed at the girls, assaulted them and fondled at least one of them, the newspaper reported Saturday.The newspaper said one of the pupils ran away from the school, blaming the alleged abuse.In an emergency meeting with pupils and parents at the school, Winfrey apologized in connection with the incident. "I've disappointed you. I'm sorry. I'm so sorry," she said tearfully, according to numerous South African media reports.Winfrey's representatives said she flew to South Africa twice this month to meet with parents of girls at the academy, although they would not specify what the meetings were about.On October 17, Winfrey -- who has spoken publicly about the abuse she suffered as a child -- issued a statement: "Nothing is more serious or devastating to me than an allegation of misconduct by an adult against any girl at the academy."In an October 23 statement, Samuel said South African child protection services were notified and the dorm parent was removed from the campus. "We have engaged professional investigators of the highest standing from South Africa and the United States to conduct a fair and impartial inquiry into these claims," he said.The school's head has agreed to take a paid leave of absence pending the results of the investigation, although she is not the subject of the allegation, Samuel said.The national prosecuting authority is deciding whether or not criminal charges will be filed. Samuel referred inquiries to the South African Child Protection Services Unit.Source: CNN