A 66 year-old former British soldier has been arrested by detectives investigating the 1972' Bloody Sunday shootings in Derry.

Thirteen civil rights demonstrators were killed by members of the Parachute Regiment on the streets of Derry.

Another victim of the shootings died months later.

The 66-year-old, who was arrested in County Antrim earlier, is being questioned at a police station in Belfast.

Alan Murray is a Security Correspondent in Northern Ireland.