MANILA, Philippines — Philippine police said Tuesday they have rescued more than 1,000 people allegedly trafficked into the country to work for an online casino in Manila.

Chinese, Vietnamese, Singaporean and Malaysian nationals were among those found when police raided buildings inside a compound in the capital on Monday night.

Police said the alleged victims had accepted jobs posted on Facebook to work in the Philippines as "assistants in online gaming".

International concern has been growing over internet scams in the Asia-Pacific region often staffed by trafficking victims tricked or coerced into promoting bogus crypto investments.