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The department said that detectives have exhausted all leads in the search for Brown and are seeking the public’s assistance in locating him.

As a "last resort" once all other food is exhausted, it has emergency stocks of fortified nutritional biscuits for 415,000 people.

"I work for myself as a carpenter, I do a good shift every week but I'm exhausted when I come home - I'm in bed by 7pm every night," he explained.

This will not apply until the appeals process is exhausted, which could take several years.

"I'm feeling pretty exhausted, I have very sore feet, but it's nice to be back in civilisation," she added.