It has been more than four years since Malaysia Airlines Flight 370, flying from Kuala Lumpur International Airport to Beijing Capital International Airport, disappeared, but the mystery has only intensified since then without anyone being able to figure out the truth. 

On July 31, the head of Malaysia’s civil aviation regulator Azharuddin Abdul Rahman resigned after an official report revealed failings in air traffic control when flight MH370 disappeared.

Also, the report said that probably the flight was ‘manipulated’ off its course and was flown to  the southern Indian Ocean where it disappeared.

However, it should be noted here that there is no conclusive evidence to back up this claim of possible hijacking.

Here are the other conspiracy theories that have been discussed in connection to the mysterious disappearance of MH370:
Pilot wanted to create world’s biggest mystery
Last year, Former Australian prime minister Tony Abbott created buzz after he said that he believes a pilot, who wanted wanted to "create the world's greatest mystery", brought the flight down intentionally.
Shot down

Mechanical engineer Peter McMahon, who is also an amateur crash investigator, said that he had found the wreckage of the flight with bullet holes in the Indian ocean by using google map. However, Malaysian Transport Minister Liow Tiong Lai dismissed McMahon’s claim saying that the images were baseless.

Cracks in the plane?

Just two days before MH370 disappeared, The Federal Aviation Administration issued a warning saying that it has found a 15-inch crack in the fuselage of one of Boeing 777s. Did MH370 also have the same defect?

The unknown passenger

Some people also believed that there was one mystery passenger onboard that day, who ultimately made the flight plunge into the deep sea.

The plane's official manifest says that 239 people went missing, but officially there were a total of 238 (226 passengers and 12 crew) people in the plane, according to volunteer investigator Andre Milne.
"The extra passenger likely acted in conjunction with larger external operational support to take full command and control of the cockpit of MH370,” he said.

Bermuda Triangle
Probably the most bizarre theory about the disappearance of MH 370 is the ‘Asian’ Bermuda Triangle.
The original Bermuda Triangle, which is a loosely-defined region in the western part of the North Atlantic Ocean, is also called the Devil's Triangle as several aircraft and ships  have disappeared under mysterious circumstances there.
People believe that these regions are controlled by extraterrestrial beings or are hubs of paranormal activities.
What do the facts say?

1. Around 12:41 am MH370 took off from the Malaysian capital of Kuala Lumpur on  on March  8, 2014  with  239 people aboard.
2. After some half an hour, the plane apparently started leaving Malaysian airspace and entered Vietnamese airspace. "All right, good night" were the final words from the cockpit.

3. After few minutes, plane's transponder stopped communicating.

4. Around 1:30 am, with the plane over the Gulf of Thailand between Malaysia and Vietnam, Malaysian air traffic controllers lost contact with it.