An audio clip purported to prove extraordinary allegations that the CIA downed MH17 was hopeless Russian propaganda, it has been claimed.

The seven-minute recording is said to contain bugged telephone conversations in English between two spies - but odd greetings and awkward exchanges suggest both men are reading from a script.

In addition, one of the two men speaks in a British accent for half of the recording before switching to an American voice - and both say ‘Luck!’ to each other, which is a common Russian farewell.

Remains: The debris of the Boeing 777 Malaysia Airlines flight MH17, which crashed while flying over the eastern Ukraine region near Donetsk in July 2014 - killing all 298 people on board, including ten Britons

The recording was released by Russian tabloid newspaper Komsomolskaya Pravda last week and is said to feature two men speaking around three weeks before the flight crashed over Ukraine.

They discuss ‘orders’ from their leaders to implicate separatists in the crash and talk about another plan of putting a bomb inside the aircraft - implying that an attack was carried out by the West.

One of the men is suggested to have a cover of working for the National Democratic Institute in Ukraine, and the other as a journalist for prominent news outlets, reported The Independent.

MailOnline reported last Wednesday on the bizarre Russian claim that MH17 was downed by on-board explosives planted by the CIA and detonated via a signal sent from a satellite in space.

It was alleged that the supposed agents in the audio clip were in charge of a sinister operation and it could have been one of them who 'pressed the button which activated the explosives on board'.

Recovery: Members of the Dutch export team watch as parts of the wreckage of flight MH17 are removed and loaded onto a truck at the crash site near the village of Grabove in eastern Ukraine, in November 2014

But an audio file of the recording posted on YouTube - which has been viewed more than 130,000 times - has been mocked by internet users, reported Independent journalist Chris Green.

This is the dumbest thing I have heard in a long time YouTube viewer

One said: ‘This is the dumbest thing I have heard in a long time. For the non-English speakers this might sound convincing, but when a native English speaker listens to this it is easy to hear they are reading a script.’

Last week Dutch investigators said fragments of a suspected Russian missile system were found at the Ukrainian site where the Malaysia Airlines flight was brought down on July 17, 2014.

The parts, possibly from a Buk surface-to-air system, are ‘of particular interest’ and could help show who was behind the crash. But the experts said they had not proved the ‘causal connection’ to this.