ONTARIO (CBSLA.com) — Employees with San Bernardino and Los Angeles counties were among the spectators at one of largest cockfighting busts in the region.

An estimated 1,000 gamecocks were found, along with cockfighting paraphernalia, in the 13100 block of Cucamonga Avenue on Sunday, the Ontario Daily Bulletin reported. An investigator with the Inland Valley Humane Society said it was one of the largest findings the agency has seen.

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Several people were cited for watching the illegal game, including 55-year-old Oliver Lopez, who works as an engineer for San Bernardino County, and 61-year-old Virgilio Wong, who works as an auditor for the county of Los Angeles.

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Antonio Cacayorin Mendoza, 57, of Chino, and Dominador Oposcolo Soliven, 55, of Hemet, were arrested on charges of cockfighting and animal cruelty.

Illegal cockfighting is common in the agricultural areas of Chino and Ontario, according to the newspaper.

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Sunday’s bust was the second time in a year the Inland Valley Humane Society had responded to reports of cockfighting at that property, the Daily Bulletin reported.