Tomas also participated in an attack on British forces near Limerick. In late 1920, Malone was captured by Black and Tans in Cork due to being in possession of ammunition. He was sent to Union Quay Barracks where he was tortured. He admitted to being Tomás Malone and was court-martialled and sent to Cork Prison. After a number of failed escape attempts, he was sent to Spike Island, County Cork. In 1922, a well documented escape from the Island took place. Malone alongside Seán MacSwiney and Con Twomey escaped on a boat flying a Union flag, that was under the control of a group of IRA members. Malone returned to Limerick to resume activities. Following the death of Michael Collins and the end of the Irish Civil War, Malone made another successful escape, this time from the Curragh Camp by hiding in a skip. Malone resided in Nenagh, County Tipperary from 1923 until his death in 1981. He was principal of the Nenagh Vocational School before retiring in 1960. Malone was the brother of Séamas Ó Maoileoin, and the uncle of Joseph Malone (Seosamh Ó Mhaoileoin), current president of Republican Sinn Fein. He resides in the family home at Meedin.