Police are appealing for anyone who might have seen Mr Nicol to contact them.
Supt. David Byrne speaks to ITV News about the investigation.
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This seat was the constituency of the former Prime Minister Tony Blair, who represented the area between 1983 and 2007.
Gales continuing during Tuesday with heavy showers, wintry over hills. Wintry showers and clear spells bring the risk of ice overnight
Alan Barnes, the Gateshead man who was a victim of an assault which shocked the country, said today that his attacker should be punished.