The RAF has been brought in to help in the search for missing teenager Alice Gross.
Pilots will carry out aerial analysis to scour west London for places to search.
‘We can confirm that, as part of the search operation, the RAF has provided assistance in the form of aerial analysis to identify potential areas of interest to officers,’ said a Met spokesman.
Runners in the Ealing half marathon wear yellow ribbons for missing teenager Alice Gross
Thirty detectives are painstakingly reviewing 35 terabytes of material from about 300 CCTV cameras covering a six-mile-square area near the Grand Union Canal. Alice, 14, from Hanwell, west London, has been missing since August 28.
Convicted killer Arnis Zalkalns is the prime suspect in her disappearance.
The Latvian, 41, has also vanished and was filmed cycling the same route 15 minutes behind the teenager.
Runners in the Ealing Half Marathon wore yellow ribbons, the symbol of the FindAliceAppeal