Ten months after his brother's murder in the French Alps, Zaid al-Hilli has moved from witness to suspect.
Detectives are seeking new leads in the case of the British family gunned down in the French Alps last September.
Brett Martin, the first witness who found the British family in the Alps has described the moment he came across the attack.
Zainab al-Hilli's health is understood to have improved in recent days, allowing her to travel back to the UK.
– A POLICE SOURCE IN ANNECY
Zainab left France this morning at around 8am. Police from Britain accompanied the little girl.
French prosecutors have told ITV News that the search for a black Mitsubishi Pajero with British number plates is "not connected at all" with the French Alps shootings.
Sky News is reporting that French police investigating the fatal shooting of a British family in the Alps are looking for a black Mitsubishi Pajero with British number plates.
Eyewitnesses told French police that the driver of the car looked "rather nervous", according to the news channel.
Surrey Police has told ITV News that Zainab al-Hilli, the seven-year-old British girl who was wounded in the French Alps shootings in which her parents were killed "is returning to the UK."
She has been in hospital being treated for a fractured skull and gunshot wounds suffered in the massacre.
Surrey Police have said that they had held an "extremely productive" meeting with senior Gendarmerie officers, the Crown Prosecution Service and a French prosecutor and judge leading the investigation into the shootings of four people in the French Alps.
– Surrey Police
The meeting has been extremely productive and progress has been made in relation to a number of issues arising from the challenges and complexities of an enquiry across two judicial processes in aninvestigation such as this.
The meeting built on the already established strong working relationships between all parties involved.
The UK and French authorities are extremely pleased with the progress which has been made.
A police guard remained outside the al-Hilli family home in Claygate, Surrey, today as searches at the detached house continued.
This afternoon officers carried out a fingertip search of the drive, front garden and front hedges. Later, an officer was seen drilling holes into an overhanging roof in the porch area of the home.
Brett Martin, a cyclist who found the British family in the French Alps has told BBC News he saw holes in the window of their car and smelt "hot, burning rubber".
Mr Martin said he decided to break the window to turn off the ignition, but was unaware that a four-year-old girl was still in the car.
– Brett Martin, witness at Alps shooting scene
I realised that it was a gun crime. Now I was getting anxious because I thought maybe there is some crazy person in the woods, because the whole area is wooded.
If you have seen CSI Miami, it was pretty much what you would imagine on a set. There was a lot of blood and heads with bullet holes in them.
The thing that struck me was their complete inanimate nature, which is how I assessed, without breaking into the car and physically handling them that they were dead.
Brett Martin, the British cyclist who discovered the bodies of the al-Hilli family, who were shot dead in the French Alps, has described to BBC News how he saw a "lot of blood and heads with bullet holes in them".