Islamic State (ISIS) terrorists have released a document which reveals the details of Mohammed Emwazi's route from Britain to Syria to join the terrorist group in Raqqa.
Emwazi, dubbed Jihadi John after he murdered Western hostages, posed as a migrant to leave the UK.
'The Times' quotes ISIS' monthly magazine'Dar al-Islam' as saying that Emwazi and another unnamed individual opted for a migrant route to leave the UK in the summer of 2012 and were smuggled out in the back of lorry to avoid checks and made their way across the English Channel.
The 27-year-old was killed in a US-led drone strike last year.
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His unnamed companion said they travelled through six countries to reach the ISIS stronghold in Raqqa.
He mocked UK intelligence services for not capturing him, and complained about mosquitoes along the way.
The account, which uses Emwazi's assumed name Abu Muharib al-Muhajir, runs to almost 8,000 words, the newspaper reports.
As Emwazi was known to British intelligence, he did not want to risk flying out of France.
The duo got to Brussels in Belgium and bought flights to Albania "without fear that British services are alerted".
They shaved their beards in Brussels, where they had breakfast in a cafe in a Muslim area.
Emwazi went on to appear in a video in August 2014 in which he beheaded US journalist James Foley.
He emerged again in other videos, including those in which the US reporter Steven Sotloff and the British aid workers David Haines and Alan Henning were murdered.
He was later identified as a Kuwaiti-born computer programming graduate from London.