sentences:  With help from police inspectors brought up to Dublin from Tipperary, Ormonde Winter's CIS spotted Treacy and Breen after their arrival in Dublin and placed them under surveillance.On 11 October 1920, Treacy and Breen were holed up in a safe house – Fernside – in Drumcondra on the north side of Dublin city when it was raided by a police unit, led there by a tout, Robert Pike.In the ensuing shootout, two senior British officers were wounded and died the next day, Major Smyth and Captain White, while Breen was seriously wounded.