[Rove] declined to comment when he left 4-1/2 hours later, mouthing to reporters: "Not supposed to take questions." Two sources close to the case said Rove's lengthy appearance suggested prosecutors wanted to closely scrutinize his earlier testimony or that he was questioned about new information obtained by prosecutors. "Being in there that long after testifying three times before can't be viewed as a particularly positive sign," said a legal source involved in the case.
And the Associated Press
His lawyer, Robert Luskin, said Rove was told by prosecutors they likely would not need further testimony or cooperation from him and that they had no yet decided whether Rove should be charged criminally. [...] After Rove's testimony, White House spokesman Scott McClellan was asked whether Rove still has the president's confidence. He would say only, "Karl continues to do his duties." [...] Rove walked into the grand jury area with Special Counsel Patrick Fitzgerald before 9 a.m. Friday and walked out a couple of minutes after the prosecutor in the afternoon.