WASHINGTON — The White House said Monday it was weighing whether to release photographs of Osama bin Laden's corpse amid calls from some key lawmakers to do so to prove the Al-Qaeda chief is truly dead.

"We are going to do everything we can to make sure that nobody has any basis to try to deny that we got Osama bin Laden," President Barack Obama's gruff anti-terror adviser, John Brennan, told reporters.

"And so, therefore, the releasing of information, and whether that includes photographs -- this is something to be determined," said Brennan, who hunted the Al-Qaeda mastermind for 15 years.

His comments came as top lawmaker warned Washington may have to release photographs of Osama, killed in a daring weekend US special forces raid on his fortified compound in the Pakistan city of Abbottabad.

"It may be necessary to release the pictures -- as gruesome as they undoubtedly will be, because he's been shot in the head -- to quell any doubts that this somehow is a ruse that the American government has carried out," said Senate Homeland Security Committee Chairman Joseph Lieberman.