DUBLIN (AP) — Britain announced Tuesday it will not order a fact-finding probe into the 1971 killing of 10 Belfast Catholics, including a priest, by British troops during a three-day street confrontation, a decision that infuriated relatives of the dead.

The relatives have lobbied for an investigation similar to the one that explored 1972’s Bloody Sunday, when troops shot dead 13 Catholic demonstrators in another city, Londonderry. That 12-year probe concluded the soldiers killed unarmed civilians, not armed IRA members.