Bartlomiej Kuczynski, 45, his daughters Jasmin, 12, and Natasha, eight, and his sister-in-law, Kanticha Sukpengpanao, 36, were all found dead from stab wounds in Costessey, near Norwich.
A father found dead next to the bodies of his two daughters and sister-in-law called the emergency services concerned about his own mental health just an hour earlier, it emerged yesterday.