A researcher accused of stealing a possible cancer-fighting compound from the Medical College of Wisconsin has pleaded not guilty.
A defense attorney for 42-year-old Hua Jun Zhao entered the plea on his client's behalf Thursday. Zhao was indicted Tuesday on charges of computer fraud and lying to a federal agent.
Zhao is accused of stealing the compound along with academic research that he's accused of planning to pass off as his own in China.
Prosecutors said also he tried to delete research from the school's servers.
A previous charge of economic espionage was superseded by the indictment, meaning it no longer applies unless he's indicted on that charge as well.
Assistant U.S. Attorney Stephen A. Ingraham said the investigation on espionage allegations continues.