Seventeen minutes after repeatedly bashing his father in the head with a baseball bat, a murderous son called for an ambulance.

His dad had a "bad slip" after falling from the couch and was "having a bit of a rest", Aaron Bernath told paramedics.

But the callous 36-year-old killer's lies did not end there.

Bernath lied to police before he was charged with his father George's murder, and then took his case to trial using a dishonest defence.

He claimed his much older, smaller and weaker father had provoked him and he was acting in self-defence.

Supreme Court Justice Andrew Tinney rejected Bernath's repeated lies as he threw him behind bars for up to 28 years today.

"Having inflicted these horrific injuries upon him, your reaction was to wait for 17 minutes before calling for assistanc

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