LOS ANGELES — A Chinese-American engineer and two relatives who allegedly conspired to steal sensitive information about Navy warships and smuggle it to China were indicted Tuesday on federal charges, authorities said.

The grand jury indictment charges Chi Mak, 65, his wife and brother with acting as agents of a foreign government without prior notification to the U.S. Attorney General, according to the U.S. Attorney’s office.

Federal officials said Mak took computer disks from Anaheim defense contractor Power Paragon, where he was lead engineer on a sensitive research project involving propulsion systems for Navy warships.

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