Various theories about missing Malaysia Airlines Flight MH370 have emerged since the plane disappeared in 2014 and a new claim now suggested a fighter jet, most likely operated by Royal Malaysian Air Force, had intercepted the Boeing 777-200. Volunteer investigator Andre Milne showed Daily Star Online a picture revealing the aircraft reaching 58,200 feet at one point.

“A jet fighter was deployed to intercept MH370... The discovery of this suppressed evidence raises serious issues on multiple levels ranging from total loss of credibility for the Malaysian government to the culpability factor that the Malaysian government is now subject to for the overall disappearance of the passengers and the crew," Milne, founder of military technology developer Unicorn Aerospace, said. He also added a Boeing cannot reach past 44,000 feet. 

“This also means that virtually every single MH370 disclosure made by the government is now suspect as being a fabrication," he added. “The fact a fighter jet was deployed in spite of repeated denials with the bizarre explanation that the mystery radar returns approaching Malaysian airspace were deemed as friendly strongly suggests that the radar returns were in fact deemed the opposite of friendly as now being deemed as hostile and or a threat."

Flight MH370 went missing March 8, 2014, with 239 people on board while on its way from Kuala Lumpur to Beijing. The latest theory comes a month after Malaysia said in its report they have not ruled out the possibility of a hijack.

However, investigators said they were unable to determine the cause of the plane's disappearance. The 449-page report released July 30 sparked condemnation from the families of those on board the jet as they accused the Malaysian government of a massive cover-up.

“This begs the question as to exactly when MH370 was deemed as now being a threat to Malaysian airspace... We now certainly all know the government did send up jet fighter aircraft which means the entire chain of command and control was put on high alert to deal with this hostile threat," Milne told the Daily Star.

“That means multiple efforts to attempt direct communication with the pilots and or the hijackers would have been engaged by the Malaysian ATC to attempt a negotiated agreement for the safe return of the passengers and of the crew... Obviously, the discussions with the hijackers failed as the passengers were never recovered.”

However, there was no confirmed report to back this claim.

A multimillion-dollar search for over three years yielded no concrete clues as to the plane's w whereabouts. Earlier this year, Malaysia signed a "no cure, no fee" deal with U.S.-based company Ocean Infinity. However, this search also turned fruitless as the plane was not found. 

Since the plane disappeared, several conspiracy theories emerged. The previous theory claimed the plane was most likely brought down by a stowaway on board the jet.

Philip Baum, the editor of Aviation Security International, reportedly said experts should be looking into the possibility that someone sneaked onto the jet to sabotage the flight.

“I think a stowaway is a strong possibility, especially as no officials seem to want to even contemplate the possibility,” Baum told the Independent earlier this month, adding he believes the saboteur likely hid underneath the floor or just behind the flight deck in a “hinged, self-closing access panel.”

Some theorists have also claimed MH370 was shot down by military forces. While some say the plane was accidentally shot down during a joint U.S.-Thai military exercise, others blamed North Korea of doing so. Some theorists claimed the jet entered another Bermuda Triangle, also known as the Devil’s Triangle, located in Asia in the Indian Ocean.

There were also theories of a possible electrical issue resulting in a fire on board the plane, which probably caused the crew to pass out from smoke inhalation, and the plane continued on autopilot until it ran out of fuel, eventually crashing into the Indian Ocean.