Where could my cat be?

On sunday it will be 2 weeks since my cat has been gone. He's only 7 months almost 8 and the most he would be gone is few hours so something happened. We recently moved into a new house and he always use to come back. He never ever went near the road. I'm thinking he might of got lost or someone took him thinking he was a stray. We have people helping but so far no one has seen him. Do anyone think what could of happened or where he could of ran off to?