HOUSTON -- More than $100,000 disappeared as it was being transferred from a credit union to an ATM, but thanks to a couple of Good Samaritans, the money was returned within 15 minutes, KPRC Local 2 reported Thursday.

The money was supposed to be delivered to Harris County Federal Credit Union ATMs around the country.

But Harris County sheriff's deputies said the six boxes of cash fell off the back of a pickup truck when they were being transferred by two off-duty Houston police officers.

The officers realized the money was gone when they arrived at the courthouse annex on Wallisville Road.

Authorities said two men found the cash while driving on Normandy Drive and picked it up. Because the boxes were engraved with Harris County Federal Credit Union and the address, the men returned it to the rightful owners within 15 minutes, officials said.

"The money rolled out," said Susan Roberts, the credit union president.

"You think that's a good way to transport money?" KPRC Local 2 reporter Elizabeth Scarborough asked.

"Well, ma'am, it falls out of armored cars, too," Roberts said. "The money is fully insured."

Roberts insisted that only armed officers are required for transport and not armored vehicles, but she will look into incident.

She said the two officers will continue to transport money.

The credit union plans to reward the men who turned in the cash, but did not specify how much.