SAVANNAH, Ga. AP – Sen. Saxby Chambliss is fighting an attorney’s subpoena seeking to question him in a lawsuit by victims of the deadly explosion at a Georgia sugar refinery, prompting fresh attacks by Democrats hoping to oust the Republican senator in a heated runoff.

Savannah attorney Mark Tate – who calls himself a “partisan Democrat” – has subpoenaed Chambliss to submit to questions Thursday about whether Imperial Sugar executives enlisted him to help the company avoid blame in the Feb. 7 explosion that killed 14 workers and injured dozens more.