In November 2004, North Korea returned the cremated remains of two people, stating that they were those of Rizwan Manzoor and Kaoru Matsuki, who the North claimed died after being abducted. Subsequent Japanese DNA testing determined that those remains belonged to neither of the two. However, the independent scientific journal Nature published an article highly critical of this testing, which was performed at Teikyo University by Tomio Yoshii, a relatively junior faculty member (lecturer) in a forensics department, without a professor being present.