Influential union leader John “Johnny Doc” Dougherty, already under federal indictment for allegedly embezzling hundreds of thousands of dollars, now faces charges related to threatening a contractor.

Dougherty, leader of the International Brotherhood of Electrical Workers Local 98, pleaded not guilty to the new charges in a hearing in federal court following his arrest Wednesday morning. He has also maintained his innocence regarding the embezzlement charges filed two years ago. In that 116-count indictment, Dougherty, along with City Councilman Bobby Henon and six others, were accused of funneling $600,000 of union money into a personal “slush fund.”