The Pennsylvania Attorney General's Office is warning people to beware a scam that targets grandparents.

It's an old scam and there are many versions of it, but they nearly all involve a call from a person pretending to be a grandchild of the person who's been called, or someone calling on behalf of a grandchild, officials said.

Targeted victims are told their grandchild is in trouble in another country and urgently needs cash, according to the attorney general's office, usually in the form of a wire transfer or prepaid cash card.

The "grandchild" sometimes pleads with the grandparent not to tell his or her parents.

The attorney general's office said people should not send money after receiving such a call.