A Texas man pleaded guilty in federal court in Brooklyn on Wednesday to acting as an agent of the Russian government and conspiring to illegally export high-tech microelectronics to Russia, officials said.

Alexander Fishenko, 49, of Houston, a dual citizen of Russia and the United States, was charged in 2012. Prosecutors said he was trying to arrange for the export of sophisticated electronics with military applications that were generally not domestically produced in Russia.

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Prosecutors said companies he formed shipped more than $50 million in microelectronics and other technologies to Russia since 2002. He also was charged with money laundering and obstruction of justice, and faces more than 50 years in prison.

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"Fishenko lined his pockets at the expense of our national security," said acting U.S. Attorney Kelly Currie.

Fishenko's lawyer did not return a call for comment.