HARTFORD, Conn. -- A scientist has pleaded guilty to charges he stole sensitive documents from a Connecticut military contractor and transported them to China.

Yu Long waived his right to an indictment and pleaded guilty Monday in U.S. District Court in New Haven.

The 38-year-old Chinese citizen and legal permanent U.S. resident worked until 2014 as a senior engineer and scientist for United Technologies Research Center.

One of the counts was conspiracy to steal trade secrets knowing they would benefit a foreign government. The other count was unlawful export of U.S. defense articles.

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Acting Assistant U.S. Attorney General Mary McCord says Long knew the documents would benefit China’s defense industry and contravene an embargo on U.S. Munitions List technology imposed on China.