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4 September 2014, 11:40
Detectives searching for a 14-year-old girl from west London who has been missing for a week have released CCTV of the last time she was seen.
Investigators have also found a rucksack belonging to Alice Gross, who has been missing since August 28.
The teenager left home at around 1pm that day, and was seen on CCTV just over an hour later on the Grand Union Canal towpath near Brentford Lock, walking towards the River Thames.
She was filmed on CCTV a second time at 3.45pm, heading back towards Hanwell, where she lives with her family.
Detective Chief Inspector Andy Chalmers, from the Met's Homicide and Major Crime Command, said: "A week on since Alice was last seen by her family we are becoming increasing worried about her welfare and safety as each day passes.
"Her disappearance is out of character and this investigation continues to be a priority for us. Alice has been missing for a considerable period of time and her family are desperate to have her back home where she belongs.
"We are exploring a number of lines of inquires and we urgently require the assistance of public to help us locate Alice.
"Our investigation has reached a point where we now know Alice was heading along the Grand Union Canal tow path in the direction of Hanwell and one would assume she was heading home.
"I would like to direct appeal to anyone who has any information to come forward and speak to us. The information you hold no matter how small may just be the vital piece of information we require."