Our new kittens are missing...Help!

We have three 1-week old kittens; this morning we went to check on them and they are gone. I would have assumed that mama cat moved them but she seems to be looking for them, mewing and running around. We have two other cats and we're worried that one might have stolen the kittens...

Any ideas?

Where were the kittens being kept? Where was mom and how were the other cats able to have contact with the kittens?

Take a flashlight and start looking everywhere and under things. Are any of your cats allowed outside?

Have they turned up yet?