Despite U.S. officials saying that terrorist Osama Bin Laden is dead and buried under the sea, Bill Warren and some others need more proof.

Warren, a 59-year-old California diver, is hoping to find the remains of Bin Laden in the Arabian sea.

Bill Warren is planning an expedition in to the Arabian sea and expects to launch an underwater search for Bin Laden's body with the help of Sonar. Sonar, an acronym for SOund Navigation And Ranging, is a technique that uses sound propagation (usually underwater, as in Submarine navigation) to navigate, communicate with or detect other vessels.

Warren, who has conducted over 150 treasure hunts around the world, said he is not joking and was carrying the ambitious mission to expose the truth.

The main motivation is to try to see if my president was really telling the truth and if bin Laden is truly dead on the bottom of the ocean, Warren told German Press Agency DPA.

The treasure hunter said he launched the mission as he does not believe President Obama gave enough proof of the terrorist's death.

We do this because we are patriotic Americans and feel that President Obama failed to provide the proof. I do not trust my government or Obama, he told TMZ.

The mission, which is expected to begin from India in a month's time, may cost hundreds of thousands of dollars and last at least 8 weeks. If Warren's team is successful in finding Bin Laden's remains, they would take photographs and DNA samples.

On May 2, 2011, Bin Laden was shot and killed inside a private residential compound in Abbottabad, Pakistan, by U.S. Navy SEALs and CIA operatives in a covert operation ordered by U.S. President Barack Obama. Shortly after his death, Bin Laden's body was buried at sea and Al-Qaeda acknowledged his death on May 6, 2011, vowing to retaliate.

However, there was criticism against Obama, who declined to release the photos of Bin Laden after his death, saying the photos could result in additional violence against American interests.

Meanwhile, Judicial Watch, a public interest group, has sued Central Intelligence Agency (CIA) and Department of Defense (DOD) under Freedom of Information Act, seeking access to all photographs and/or video recordings of Osama (Usama) bin Laden taken during and/or after the U.S. military operation in Pakistan on or about May 1, 2011.

The American people by law have a right to know basic information about the killing of Osama bin Laden. President Obama's personal reluctance to release the documents is not a lawful basis for withholding them. The Obama administration will now need to justify its lack of compliance in federal court. This historic lawsuit should remind the administration that it is not above the law, said Judicial Watch President Tom Fitton.