A prosecutor did not rule out the possibility Friday that the special counsel’s office would bring additional charges against Paul Manafort for allegedly violating his September plea deal.

Andrew Weissmann, a top prosecutor working under Special Counsel Robert Mueller III, said his team was prepared to detail how Manafort, the onetime Trump campaign chairman, broke his plea agreement by lying to investigators. When asked by Judge Amy Berman Jackson whether the special counsel planned to charge Manafort over those allegedly false statements, Weissmann replied, “That determination has not been made yet.”