On 28 February 1985, the Provisional Irish Republican Army (IRA) launched a heavy mortar attack on the Royal Ulster Constabulary (RUC) base at Corry Square in Newry, Northern Ireland. The attack killed nine RUC officers and injured almost 40 others; the highest death toll ever suffered by the RUC. Afterwards, a major building scheme was begun, to give police and military bases better protection from such attacks.