It appears that the lock-down of cash has begun.

Citing criminal activity as a factor, JP Morgan is limiting cash withdrawals at ATM machines.

The bank said there doesn't appear to be fraud involved. But partly due to heightened regulatory scrutiny, banks are paying more attention to large cash transfers that could be a sign of money laundering or other types of shady activity. Typically, the card-issuing bank sets withdrawal limits, not the bank owning the ATM.

The move by the largest bank in the U.S. doesn't affect J.P. Morgan Chase's own customers, whose maximum daily withdrawals are set depending on the client's account type. The bank has seen high-dollar withdrawals at both new and old ATMs, said bank spokeswoman Patricia Wexler.