EMMERICH, Germany (AP) _ A bank teller concocted a story about a robber holding a gun to a toddler's head and demanding cash to cover up his own role in a swindle, police said today.

The teller said two Dutch men persuaded him to make an unauthorized exchange of 100-mark bills for 1,000-mark bills in a sum equal to $138,000. He said they threatened his wife and children if he did not make the exchange, and promised him a commission worth $5,500.

To explain the missing money, police said, the teller made up a story about a robbery Thursday at the bank in Emmerich, near the Dutch border.

The teller's name was not released. Police were investigating whether he should be charged in the crime.