The Leader of the Labour Party, Ed Miliband, has paid tribute to Dr Joe Hendry.
"I am deeply saddened by the death of Joe Hendry. I met Joe on several occasions and his passion and commitment to Carlisle and Cumbria always shone through.
"I know he was incredibly proud of the city he called his home and ambitious for its future.
"His love of the Labour Party was equally strong. He led Labour out of opposition after 13 years and since becoming Leader of the Council has worked hard to keep the promises he made to local people.
"His loss will be felt across the whole community. My thoughts are with Monica and his two sons at this sad time."
More top news
A 40-year-old woman was sexually assaulted in Dumfries at the weekend, after getting into a car which she thought was a taxi.
Young Muslim volunteers delivered Ramadan meals to over 100 households, helping to 'promote community cohesion and tackle prejudice'.
Forty players filled the Sands Centre for a Boccia tournament in memory of a former player, Simon Ward, who died when he was 25-years-old.