He has a New Zealand accent.
O'Brien dropped his two sons off at his ex-wife's home on Thursday evening, April 2, 2009 and has never been seen or heard from again. The door to his home was found to be unlocked and his keys, wallet, credit cards, cell phone and clothes were all inside. His computer and passport were missing. O'Brien worked as an audio editor for films and was originally from New Zealand. His passport has not been used and his case remains unsolved.