Emergency laws will be rushed through the Parliament to allow police and MI5 to investigate people's mobile phone and internet data.
The new measures will mean phone and internet companies will be required to store data for a year.
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The Bad Seeds singer said his shows in Tel Aviv are a way of standing up to an anti-Israel boycott campaign that seeks to 'bully musicians'.
The rambling speech came just hours after the country's ruling party voted to sack Mr Mugabe as their leader.
A post-mortem examination 'has not identified any injuries to suggest any other person was involved', Dorset police said.