Police are hunting for a man in connection with the deaths of three women.
Officers were called to Ashlyn Close, Bushey, Hertfordshire, just before 19:00 BST on Tuesday and found three seriously injured women. They all died at the scene.
Hertfordshire Police has been searching overnight for Kyle Clifford, 26, from the Enfield area, who is believed to be in Hertfordshire or north London.
Det Supt Rob Hall appealed to anyone who knows where he is to contact police immediately.