NEW ORLEANS (Reuters) - A federal judge declared a mistrial on Friday in the case of a retired police detective accused of conspiring to cover up wrongdoing in fatal police shootings in New Orleans in the aftermath of Hurricane Katrina, a lawyer for the officer said.

Gerard Dugue was accused of plotting to conceal wrongdoing in the 2005 fatal shooting of two unarmed civilians by police on the Danziger Bridge as much of the city remained underwater from flooding in the chaotic days following the storm. Dugue was not directly involved in the shootings.

(Reporting By Kathy Finn; Writing by Cynthia Johnston)

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