A Chinese professor charged in connection with an intellectual property dispute involving the Chinese telecom company Huawei was brought from the Dallas area to Brooklyn for reasons that cannot be publicly disclosed, prosecutors revealed in court Wednesday afternoon.

Bo Mao, 36, is accused of helping steal proprietary technology from a California startup to help Huawei, according to documents filed in Texas and New York federal courts. He has pleaded not guilty to one count of conspiracy to commit wire fraud.

The motion to move the case to the Eastern District of New York contained grand jury information that cannot be released to the public or to Mao's defense attorneys, despite their requests to see it, Assistant U.S. Attorney Alexander Solomon said in court.