A Rockingham father has had manslaughter charges against him dropped overnight.
Dylan Clinton O'Meara was accused of breaking his baby's arm then shoving a blanket in his mouth to silence cries of pain in April 2016.
A Supreme Court judge found the police coerced him into providing an explanation through his imaginary friend.
The 22-year-old suffers from split personality disorder.
Once a key piece of evidence was thrown out, the prosecution dropped their case against him in a matter of minutes.
Mr O'Meara was unable to attend the funeral of his seven month old child due to the charges.
While new charges could be laid in the future, Mr O'Meara's legal team said it was unlikely.
Lake Clifton Campers air rescued after becoming stranded in wild weather
Men charged after traffic stop in West Pinjarra leads to 80kg drug seizure
Green waste fees waived for Mandurah residents after weekend storms
Concerns for missing Rockingham boy
'Prognosis terrifying' for young boy struck by car in Cooloongup
K9 Rescue's long-term resident in desperate search for loving home
West Coast Radio announcer Darragh O’Dea takes out Best Local Show at Australian Audio Awards
Lucky escape for two people after boat smashes into Mandurah Estuary Bridge
Secret Harbour Golf Links to host WA's most prestigious golf tournament