WASHINGTON — A group of California cities and localities are urging a federal judge in Manhattan not to dismiss the 13 cases they brought against Wells Fargo & Co. and 44 other banks, broker-dealers and investment brokers, charging they conspired to rig bids and fix prices of guaranteed investment and derivatives contracts in the muni market.

The group made their arguments in court filings about a week after the judge, Victor Marrero of the U.S. District Court for the Southern District of New York, refused to dismiss similar class action claims filed primarily by East Coast state and local governments.

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