Updated

Prosecutors are considering criminal charges against casino gamblers who won big on a slot machine that had been installed with faulty software.

The machine at Caesars Indiana credited gamblers $10 for each dollar they inserted because the software wasn't designed for U.S. currency, state police said. More than two dozen people played the machine before one gambler alerted Caesars employees.

Caesars lost $487,000 on the machine during that time, state police said.

A decision on whether to bring criminal charges could come in a couple of weeks, said John Colin, chief deputy prosecutor for Harrison County. He said "criminal intent" may be involved when people play a machine they know is faulty.

The casino said some of the gamblers returned the money after the casino contacted them.

The incident occurred last July, but Colin said Wednesday that obtaining casino records took longer than expected.

Kathryn Ford of Louisville, Ky., the gambler who alerted the casino, said going after the other patrons was unfair.

When a slot machine jams and gamblers lose money, they don't get it back, she said.

"It doesn't work in the reverse," Ford said. "They need to forget it and move on."