A jury in U.S. District Court in Hartford delivered a mixed verdict Monday at the trial of two men accused of stealing trade secrets from LBI Inc., a Groton-based defense contractor that designs unmanned underwater vehicles for the Navy.

Jay Williams of Griswold was found not guilty on all counts, according to the office of the U.S. Attorney.

The jury found Jared Sparks of Ardmore, Oklahoma, guilty of six counts of theft of trade secrets, six counts of upload of trade secrets, and one count of transmission of trade secrets.  The jury found him not guilty on several other counts.

On Nov. 3, 2016, a grand jury returned a 29-count indictment charging Sparks and Williams, who worked at LBI Inc. in 2010 and 2011, with uploading proprietary information from LBI into Dropbox accounts before leaving the company to work at another contractor — Charles River Analytics of Cambridge, Mass. — that developed software for LBI's vehicles.

No sentencing date has been set for Sparks, who faces a maximum prison term of 10 years for each of the counts.