A post mortem revealed that Monika, Maja, Michal and Dawid Wlodarczyk’s cause of death was from sharp force injuries and stab wounds.
Police were alerted by Maja’s school last Friday as they were concerned she hadn’t been into school all week.
It’s not yet known what day they all died.
Detective Chief Inspector Linda Bradley says, “we are not currently seeking anybody else in connection with the incident”.
