British killer Simon Hennessey, who escaped from a Gloucestershire prison in 1998 where he was serving a life sentence for murdering his aunt, was recaptured in Australia earlier this month.
Avon and Somerset police hope he will be extradited from Australia where he has been arrested on suspicion of several counts of credit card fraud.
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The 17-year-old was trapped for 30 hours in Australian shrubland but there was no report of a road accident to help the search.
The expansion of the probe came as Jeremy Corbyn declared Carillion's demise a "watershed moment" that should end "rip-off privatisation".
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