"I was happy for Karen Read and her family of course. I think justice was served," Prado said. "But seeing John O'Keefe's family leaving the courthouse, was melt my heart. I'm a mother and I saw her pain through all those days."

Karen Read’s second murder trial was a rematch for the lawyers after the first ended in a hung jury last year. CNN correspondent Jean Casarez answers key questions about the case after Read was acquitted of murder Wednesday.

Karen Read's retrial concludes with a verdict on charges of second-degree murder and manslaughter in the death of officer John O'Keefe during a blizzard.