Authorities say they've busted a massive illegal gambling operation that ran card games out of Southern California mansions, took bets from Canada to Mexico and laundered $10 million through San Diego card clubs and Las Vegas casinos.

Hundreds of federal and local agents raided two card rooms Wednesday in Chula Vista and San Diego. State regulators ordered them closed. Agents seized more than $600,000 from player accounts and bank accounts.

Arrests were made in California and in Arizona, Nevada, New Jersey, New Mexico, Pennsylvania and Iowa.

Indictments unsealed Wednesday charge 25 people with federal crimes. Four pleaded not guilty in San Diego to federal charges.

Prosecutors contend the ring ran sports betting, poker and other games from offshore gambling websites and in rented San Diego County mansions and other locations.