Las Vegas casino bosses are serving notice to the bandit who made off with $1.5 million in chips from the Bellagio: Try to redeem those worth $25,000 soon or they'll become worthless.

Bellagio owner MGM Resorts International is giving public notice that it's discontinuing its standard chip valued at $25,000 and calling for all gamblers holding the chips to redeem them by April 22.

After that, gambling regulators say each red chip with a gray inlay won't be worth more than the plastic it's cast from.

MGM Resorts posted notice of the redemption last week in the classifieds of the Las Vegas Review-Journal newspaper. That's one week after a robber wearing a motorcycle helmet held up a craps table at gunpoint and made off with a bag of chips of varying denominations.