WA father Michael Macrae blames baby Nathaniel’s mum for inflicting injuries that later killed him

A father accused of killing his six-week-old son by shaking him has instead accused the baby’s mother of being the murderer.

Baby Nathaniel was in Michael Macrae’s care when he was rushed to Narrogin hospital with catastrophic brain injuries, but says it wasn’t him who inflicted them.

Erica…