Police on Saturday arrested Kenji Kusunoki, a former Ohu University professor, on suspicion of leaking questions on the March 2000 National Dentistry Examination to his students in violation of the Dental Practitioners Law, police said.

The Metropolitan Police Department also arrested Itsuo Ueda, a 59-year-old professor at the Health Sciences University of Hokkaido who served on the exam board, on suspicion of providing questions to the 54-year-old former Ohu University professor, they said.

By law, anyone found guilty of leaking dentistry exam information may be imprisoned for up to a year or fined a maximum of 20,000 yen.