The body of Andrew Veal was found on Saturday morning inside the site, which is off-limits to the public. Police said a shotgun was found nearby, but there was no suicide note.
But while the police said Veal had opposed the war in Iraq and was apparently upset following President Bush's re-election, his friends at the University of Georgia said he was planning to get married soon.
The New York Daily News, however, quoted sources as saying Veal led a double life, and that while engaged to be married to an Iowa college student, he also had a girlfriend in Athens, Georgia, where he lived.
'When
The article quoted friends as saying Veal was a peaceful, liberal vegetarian who hated guns, never got worked up about politics or Sept. 11 and seemed content.
'The day after Bush won, Veal bought a shotgun in an Athens store and drove to New York, a source said, where he went on a spending spree with his girlfriend's credit card,' the article said.
Police were investigating how Veal entered the fenced and guarded site of the twin towers which collapsed after hijacked aircraft slammed into them September 11, 2001.