FBI agents in Los Angeles have arrested four people for allegedly trying to smuggle US military secrets to China.
An FBI affidavit said they were charged with theft of government property, conspiracy and transportation of stolen goods, Reuters news agency reported.
The affidavit said one suspect worked for a California defence contractor.
Those arrested – two married couples – are all ethnic Chinese. Two of them are naturalised US citizens, while the other two are legal US residents.
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