Late on the night of May 29, 2025, a 911 caller reported someone was being attacked near Dewey Street and Michigan Boulevard in Michigan City. Officers found a man nearby and were told that someone inside a residence at 1824 E. Michigan Boulevard had been shot. Inside the home, two brothers were discovered with gunshot wounds: 25-year-old Treven Armstrong of Gary and his 24-year-old brother Christopher Armstrong of Indianapolis.

Treven Armstrong died of his injuries at the scene; Christopher Armstrong was critically wounded and taken first to Franciscan Hospital and then transferred to South Bend Memorial Hospital. Michigan City investigators executed a search warrant at the residence and gathered evidence and witness statements. Investigators identified 23-year-old D’Marcus Thompson of Gary as a suspect; he was arrested in the 300 block of South Woodland Avenue and found to be carrying a 9mm handgun. Thompson was charged with murder, attempted murder, aggravated battery, and criminal recklessness, and a judge set bond at $1 million cash.

Does anyone have information about the events at 1824 E. Michigan Boulevard that night or knew either of the brothers?