One person was arrested after a pursuit through two counties at speeds topping 100 mph, Los Angeles police said.
Costa Mesa police Sgt. Bryan Glass said three masked gunmen held up a Downey Savings branch, fled in a getaway car and then switched to another vehicle.
The second car led police on a chase along freeways from Orange County into Los Angeles County.
In Los Angeles, the chase moved from freeways onto streets as someone in the car threw at least three wads of money out a car window.
The car eventually crashed into a palm tree at the Baldwin Hills Crenshaw Plaza, and the four men inside ran off.
Los Angeles police said one man was arrested there as officers searched for other suspects.
Police did not immediately say whether any money was found in the car, and there was no word on what happened to the currency thrown out during the chase.
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