Police chief apologizes for failure to send letter to girls ' parents but defends police inquiry . Relatives of the girls tell Aqsa Mahmood lawmakers they had no idea what the girls were planning . Family members criticize how police handled the case , say they were not kept informed .
Police chief apologizes for failure to send letter to girls ' parents but defends police inquiry . Relatives of the girls tell UK lawmakers they had no idea what the girls were planning . Family members criticize how police handled the case , say they were not kept informed .