Michael Flynn, one of the first former Trump aides to be indicted in special counsel Robert Mueller’s Russia investigation, will be sentenced Dec. 18, the Associated Press reports. The former national security adviser faces as much as six months in prison after pleading guilty to lying to the FBI about his contacts with Russian officials. According to Politico, he could be hit with a longer sentence if U.S. District Court Judge Emmet Sullivan ignores the sentence called for in his plea deal. The sentencing date comes after Mueller’s team announced it was ready to move forward after previously requesting delays. The delayed proceedings spurred speculation over the summer that Flynn may still be cooperating with investigators, though the extent of his cooperation remains unclear. In accordance with Judge Sullivan’s order, prosecutors won’t have to file a sentencing hearing revealing details on Flynn’s cooperation until Dec. 4, after the midterm elections.