(CNN) -- Donald Sterling is digging into his wallet to dig into the NBA and its owners. In his latest salvo against the league that's moved to oust him over racist remarks, the embattled Los Angeles Clippers co-owner has hired "multiple private investigation firms" to look into alleged discriminatory conduct by fellow team owners and the NBA itself, said a person familiar with Sterling's legal strategy. He will give each firm a budget of $50,000 and 30 days to finish an investigation, according to this source, who is not authorized to speak publicly and spoke to CNN on condition of anonymity.
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NEW: Source tied to NBA: Hiring investigators part of a "strategy of intimidation"
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"Multiple private investigation firms" have been hired by Sterling, a source says
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Source: They each have a $50,000 budget, 30 days to finish their probes
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Investigators will look into instances of discrimination, NBA executives pay
The release spurred an uproar among league officials, fans and players, who reportedly threatened to boycott playing in the NBA playoffs if Sterling still was in control of the @placeholder.