Authorities say a body pulled from Lake Michigan on Chicago's South Side was that of a medical student who was reported missing in April.

The Cook County medical examiner's office says the body of Ambrose Monye was found last weekend.

The medical examiner's office says an autopsy did not determine the cause and manner of his death, and more studies were being conducted.

The 28-year-old Monye was set to graduate from a university in Guadalajara, Mexico. He was last seen April 21 in the area of Jackson Park Hospital, where he was conducting clinical rotations. A missing person report was filed by his brother, Joseph Monye, also a medical student.

Joseph Monye said his brother was excited about graduating, and there was no reason to think he was troubled.