The inquests into the deaths of Michael Pedersen and his two children will be opened and adjourned tomorrow.
A post mortem examination has revealed that seven-year-old Ben and six-year-old Freya died from multiple stab wounds. Mr Pedersen, who was from Chertsey in Surrey, also died from stab wounds to the chest.
Their bodies were found in Hampshire on Sunday.
Police are not looking for anyone else in connection with the deaths.
More top news
The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
A 37 year old man who was taken to hospital after getting into difficulty in a stretch of water near Maidenhead has died.
Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.