An investigation has been launched by the Navy into an allegation that the former Navy SEAL who claims to have shot and killed Osama bin Laden might have revealed classified information to unauthorized people, said a Navy official. Since Robert O'Neill declared that he was part of the operation that led to killing of the al-Qaeda leader, he has given several interviews.

Last month, O'Neill told The Associated Press that he had made strong efforts to ensure classified information is not revealed to persons who are not authorized to receive it. Also, he has not compromised with SEAL tactics.

However, a statement by a spokesman for the Navy, Cdr. Ryan Perry, on Tuesday said the investigation into the matter was launched by the Naval Criminal Investigative Service after it received an allegation that O'Neill may have revealed classified information to persons not authorized to receive such information. The investigation has been launched with the sheer intention to determine the merit of the allegations, said Perry.

Pentagon officials said that there is still uncertainty over who killed bin Laden. The point man who led the way to bin Laden's bedroom fired the fatal shots, according to another SEAL, Matt Bissonnette. He added that bin Laden was already dead when he and a second SEAL, presumably O'Neill, fired a shot at bin Laden.

Now, the Naval Criminal Investigative Service is looking into allegation against the Montana man who says he fired three bullets in the 9/11 architect's face.

Special operations officials have to say that the former SEAL did not provide correct information and it is wrong on his part to take sole credit for the assassination.

O'Neill told the Daily News in November that he felt nothing wrong in coming forward after talking to the families of 9/11 victims.