NCAA President Mark Emmert has sent a letter to Penn State informing the university that its athletic programs will be investigated by the NCAA.

The investigation is being performed following the charges of sexual abuse against former assistant football coach Jerry Sandusky.

“I am writing to notify you that the NCAA will examine Penn State’s exercise of institutional control over its intercollegiate athletics programs, as well as the actions, and inactions, of relevant responsible personnel,” Emmert said in the letter.

The letter, addressed to Penn State President Rodney Erickson, said university officials should be ready to answer questions as part of the NCAA investigation.

The NCAA investigation comes at a time when others are looking for more answers, which Emmert acknowledged.

“We recognize that there are ongoing federal and state investigations and the NCAA does not intend to interfere with those probes,” he said.