1. Aeroplane shot down in a botched military operation

A book, Flight MH370: The Mystery, claimed that the aeroplane was accidentally shot down by US-Thai strike fighters in a top-secret training drill in the South China Sea. London-based author Nigel Cawthorne said: "Those involved would have every reason to keep quiet about it."

And now they have planted debris to cover their tracks.

2. The CIA is involved

Former Malaysian prime minister Mahathir Mohamad has accused the CIA and Boeing of hiding evidence. In a blog post, he wrote that, if the aeroplane's GPS system failed, Boeing and the US intelligence agency would know why but were not revealing anything.

"Someone is hiding something," he wrote. "It is not fair that MAS [Malaysia Airlines] and Malaysia should take the blame."

Could Boeing and the CIA be planting fake debris to hide its involvement?

3. The aeroplane was taken to a remote US military base

The US government has been forced to deny claims that the aeroplane was forced to land at its military base Diego Garcia, a small coral atoll about 3500 kilometres west of Malaysia.

Diego Garcia has been at the centre of numerous other conspiracy theories, including claims that it is used by the CIA for "nefarious activities".

As you can see, this is a conspirasstastic list. Which is your favourite?