NEWARK, N.J. -- A man arriving from Portugal apparently committed suicide in a janitor's closet at Newark Liberty International Airport. Authorities said the 39-year-old Maryland man was found by a cleaner Sunday afternoon. The man's name was being withheld while authorities tried to reach relatives. The man apparently hanged himself between his walk from the plane and the customs checkpoint to re-enter the United States. Authorities said the man, a U.S. citizen, was scheduled to make a connecting flight to Washington, D.C. The Essex County Medical Examiner's Office planned to perform an autopsy.