Labour and the Conservatives both gained one seat in the Carlisle City elections. Council Leader Colin Glover says the results show "confidence in the Labour administration".
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Sharon Grierson died in hospital from a lack of oxygen after a breathing tube was accidentally put into her oesophagus.
The boys, all aged under 16 and from west Cumbria, have been on trial at Carlisle Crown Court during the past fortnight.
Four flood warnings are currently in place across parts of southern Scotland.