French and British police are searching the home of a British man shot dead in the French Alps along with his wife and two other people.
Surrey Police are helping French detectives search the home of Saad al Hilli in Claygate.
Two family members have arrived in France to comfort Mr al Hilli's two young daughters, aged seven and four, who survived the attack.
Prosecuters today said each of the four murder victims were shot twice in the head.
The motive for the crime still remains a mystery.