A mother with reported emotional problems fatally stabbed her 7-month-old son at a Bay Area park on Saturday, police said.
Police discovered a car abandoned at Del Valle Regional Park on Saturday morning. Rangers began searching and found the woman on a trail holding her lifeless baby.
"This kind of thing rarely happens in our jurisdiction," Anderson told the newspaper. "This is an extremely shocking case for us."
The San Francisco Chronicle reported that the woman was arrested Saturday night and booked into jail.
The woman had a self-inflicted knife wound to the arm, and police recovered a knife, the newspaper said. Detectives believe the woman was suicidal.