Police say 20-year-old Rafael Vargas is accused of stabbing the mother of his child after an argument.
When officers arrived on scene, they found the victim bleeding from the back of her head.
They say Vargas used a steak knife and stabbed her several times in the back of her head.
He was last seen running from the location and is still at large.
Anyone with information is asked to contact the Coalinga Police Department.