LAKE CITY â The names of the people involved in a murder/suicide last weekend were released Tuesday by the Michigan State Police, but many questions remained, including a motive. Michigan State Police were called Saturday, April 3 night to perform a welfare check at North Seven Mile Road home in West Branch Township. When troopers entered the home, they found Patricia Lynn Briggs, 62, deceased from a gunshot wound, Michigan State Police said. No one else was found in the home, according to police. Troopers developed a suspect â her son Adam Prichard Briggs, 30, of Lake City â and put out a broadcast alert, according to police.