Two men accused of throwing homemade explosives in New York City pleaded not guilty to federal terrorism charges on Wednesday.

The defendants are alleged to have hurled homemade bombs during an incident in March that occurred outside Gracie Mansion, according to court proceedings. The charges against them include terrorism-related offenses at the federal level.

One source indicated the incident involved explosives being thrown into a crowd of protesters, while another described it as taking place outside the official residence of New York City's mayor. The specific details of the March incident and the circumstances surrounding it were not fully detailed in available reports.

Federal prosecutors have reportedly gathered substantial digital evidence in the case, though the exact nature and scope of this evidence was not specified in court proceedings.

The case is proceeding through the federal court system, with both defendants maintaining their innocence through their not guilty pleas. Further court proceedings are expected as the case moves forward.