BOSTON (AP) — Authorities suggested for weeks in court hearings and papers that members of the Oath Keepers militia group planned their attack on the Capitol in advance in an effort to block the peaceful transition of power. But prosecutors have since said it’s not clear whether the group was targeting the Capitol before Jan. 6, giving defense attorneys an opening to try to sow doubt in the government’s case. Authorities are still combing through a sea of evidence in what they say is likely the most complex investigation ever prosecuted by the Justice Department. More than 300 people are facing federal charges and more are expected.