Nev said Hackett was no longer at Pindara Private Hospital.

“He’s definitely a missing person and he is mentally disturbed and needs urgent help,” Nev said while fighting back tears.  

“If anyone sees him contact the media and the police or the Hackett family.

“Grant, let us know where you are, we love you, and we want to help you.”

Nev’s plea follows a dramatic Wednesday in which Hackett was arrested at his parents Gold Coast home after becoming a “danger” to himself.