It's been almost five months since Missing Malaysia Airlines flight MH370 disappeared after losing contact with the radars. While many countries' joint effort failed to find the mission Boeing 777, several theories continue to float around. One of widely circulated theories claims that the plane's pilot, Zaharie Ahmad Shah is involved in the disappearance. Two Waikato authors suggest the same in their new book based on the tragedy of missing Malaysia Airlines flight MH370.

A report by Waikato Times claims that authors of "Goodnight Malaysian 370: The Truth Behind the loss of Flight 370" suggest that Captain Ahmad Shah Zaharie "committed suicide or murder." The New Zealand based writers Geoffrey Taylor and Ewan Wilson released their book on Amazon Kindle on Aug. 4, 2014. The print edition will be released on Aug. 10, 2014.

The website notes that Wilson is a pilot and former chief executive officer of two airlines. He also holds qualifications in transport air investigation. The book is said to be based on "extensive research" done by the two authors, who believe that the captain may have taken the "out-of-fuel" plane to its final resting location in southern Indian Ocean and "sunk it intact." Wilson and Taylor reportedly visited Malaysia and conducted interviews with relatives, family and friends. It is reported that the book delve into each "possible scenario" that could explain the cause of disappearance of MH370.

"We were able to completely rule out any possibility of catastrophic structural failure, rapid depressurisation, electrical failure, fire or being shot down as possible causes for MH370's loss," Wilson said as reported by Waikato Times.

Wilson and Taylor used the "process of elimination" in order to arrive at the logic. According to them, the missing Malaysia Airlines flight MH370's disappearance is the outcome of Zaharie's deliberate act of "killing himself and everyone" travelling in the airplane. The authors claim this could be due to Zaharie suffering from "some personality disorder, depression or emotional breakdown."

The New Zealand based authors even try to explain how Zaharie may have implemented his suicide mission. The book claims that Zaharie may have locked himself inside the cockpit, leaving co-pilot Fariq Hamid outside the cabin. And then he may have cut off the entire communication system making MH370 invisible to radar detectors. After changing the route, he may have initiated "Depressurization of the aircraft." This may have left everyone without oxygen, killing them off "hypoxia."

The book draws attention towards cases where "pilot suicides" have led to such accidents and suggest equipping and training pilots with methods of coping with stress.

Missing Malaysia Airlines flight MH370 vanished on March 8, 2014 soon after it took off from Kuala Lumpur. The Beijing-bound flight was carrying 239 people from 15 countries. On March 24, 2014, Malaysian PM announced that the plane "crashed in southern Indian Ocean." BBC reported that the announcement was based on "analysis by British satellite firm Immersat." However, lack of debris and evidence has raised several questions and search for the missing plane continues. Australia Network News reports that "deep-water search for the missing Malaysia Airlines flight MH370" will be resumed in September.