Can an officer be considered in persuit of someone if they are not using their lights or sirens?

Jefferson Co. Sherrifs said that my son pulled into the driveway of our home and was hiding in his car from them. Neighbor has said that he had parked for a miunte before cops arrived and they did not turn on their lights till they hit the driveway. My son was not aware they were even in persuit of him had seen no lights behind him and he told them that when he got out of his car. He was issued a DWI but not other citatitons