Dad, 19, ‘shook baby so hard “3/4 of his brain is dead” and he’s “neurologically devastated”‘

A 19-YEAR-old dad allegedly shook his baby so hard that "three-fourths of his brain is dead" and he's "neurologically devastated."

Isaiah Hill has been accused of assaulting his eight-month-old son Milo in his home in Portland, Oregon, KATU reported.

: “He had a stroke that affected both sides of his brain, so three-fourths of his brain is dead."

Before her son was taken to the hospital, Raney recounted how she found him.

that he accidently dropped Milo when he tripped over a dog.

Hill told the same story to Raney – which prompted her to call 911.

Court docs, obtained by KPTV, state that Milo was found to have a “profuse brain injury” and spine damage at the hospital.

Raney has called the whole situation "very heartbreaking."