On January 31, 2014, 69-year-old Thomas Sonnenberg let a stranger into his Minneapolis home after the man, identified as 20-year-old Devon Parker, appeared at the back door saying someone was trying to kill him. Sonnenberg called 911 at Parker’s request and tried to help, but moments later Parker asked for a weapon and then fatally shot Sonnenberg in the head with Sonnenberg’s own gun. Sonnenberg’s 68-year-old wife was in the home and was assaulted after the shooting.

The deadbolts Sonnenberg had installed kept Parker inside the house; police found and arrested him at the scene and later charged him with second-degree murder. Parker had a prior criminal history and was scheduled to be sentenced in an unrelated assault case on the day of the killing. Reports say he appeared paranoid and distressed when he first approached the home, but no clear motive has been established.

Does anyone have information about Thomas Sonnenberg, his family, or the circumstances that night that could help clarify what happened?