French police are arriving in Britain to search a house in Surrey as part of an investigation into the murder of four people in the Alps.
They will work with UK detectives and are to scour the home of victim Saad al-Hilli in Claygate, Surrey.
Al-Hilli was shot dead in his car alongside his dentist wife and another woman who was Swedish. A French cyclist who stumbled across the attack in Chevaline was also gunned down.
The couple's four-year-old daughter Zeena lay undiscovered under her mother's corpse for eight hours after the murders. Her seven-year-old sister Zainab remains in a coma in hospital after being shot and beaten.
French detectives are investigating whether there was a family feud, however al-Hilli's brother has approached police and denied there had been arguments over money.
The four-year-old girl has spoken to police and confirmed that two of the victims were her parents, but said she did not know the Swedish woman very well.
All the victims were shot at least three times and investigators have found 25 spent bullet cartridges at the scene on the outskirts of a forest near Lake Annecy.
A Scotland Yard spokesman said they could not comment. But it is understood there is no link between the deaths and any national security issues.