(Portland, OR) -- A 32-year-old man is charged with his mother's death in Portland. Last Thursday, police responded to a domestic assault at a home on Northeast 68th Avenue near Clackamas Street. Police found 64-year-old Kathy Green suffering life-threatening injuries after being assaulted with a baseball bat. She died Saturday in a hospital. Her son, 32-year-old Austin Green-Yurick is charged with murder in the second degree-domestic violence.