WALSH COUNTY, ND (trfnews.i234.me) A man from Hoople, North Dakota was killed Saturday night when the semi he was driving rolled in Walsh County. The victim has been identified as 61-year old Mario Diaz of Hoople, North Dakota. a Hoople North Dakota man was killed in a semi- rollover crash in Walsh County North Dakota… Continue reading Fatal Semi Crash in Northeast North Dakota Claims Life of Mario Diaz, Victim ID 61 from Hoople, ND.