Xavier Becerra’s Democratic rival for attorney general, Dave Jones, on Thursday broadened his attack, alleging in a new suit that the incumbent misused a working courtroom in Sacramento as a campaign ad backdrop.

Jones’ lawsuit mirrors similar complaints Monday with the Fair Political Practices Commission and the Attorney General’s Office. Jones claims Becerra violated state law barring campaign activities in public buildings when his campaign shot campaign footage inside the Stanley Mosk Library and Courts Building. The five-story complex is home to the Third District Court of Appeal, including its historic courtroom.