BOISE - A New Zealand native living in Boise for several months may be missing and his family is asking anyone with information to call a hotline.

Peter O'Brien's family and friends say they have no idea where he is but something just doesn't seem right.

O'Brien's family says he recently moved from Southern California to be closer to his two sons. They say he's never left without telling someone where he is going and that's what makes this time so strange.

In store fronts and posted on windows missing person sign blanket Hyde Park, each one a plea for help from O'Brien's family.

"I just can't imagine him running away, so I think something must have happened to him," said Suzanne Oppenheimer, O'Brien's ex-wife.

Oppenheimer says she last saw him Thursday evening when he dropped off their two young sons.

"There was nothing that made me think 'Oh my, there is something wrong with Pete,'" she said.

On Saturday when she called to find out when he would be picking up the kids no one answered.

"Fifty calls later he stilled hadn't return any calls so finally I went up there with my six year old just to check on him, make sure he was okay," says Oppenheimer.

But she says the door to his apartment was unlocked and inside she found his keys, wallet with his credit cards, and his cell phone all left on the counter.

"His bags are at home, his shoes are at home, his clothes are at home, his jacket is at home, so I don't know where he could be," Oppenheimer said.

Boise Police say they are investigating O'Brien's disappearance and right now there is no evidence a crime has been committed.

But Oppenheimer says it's hard not knowing what to do or what to say especially when it comes to their two sons.

"I don't want my kids to grow up without a dad," she said.

O'Brien is described as 5'8'', about 160 pounds, with short black hair. He has a New Zealand accent.

If you have any information on his whereabouts you are urged to call a tipline his friends have set up #936-2722.

You can also call Crime Stoppers at #343-COPSs.

O'Brien's apartment manager says he did pay his rent on the first day of April. Oppenheimer believes that is an indication he was planning to stay.