Alice Gross: Osterley Park searched in hunt for girl

More than 1,000 calls have been made to Scotland Yard's incident room about Alice's disappearance

The hunt for missing schoolgirl Alice Gross has moved to a National Trust-owned estate near to where she was last seen more than a month ago.

Scotland Yard officers are combing Osterley Park, in west London, for the first time.

The park is about two miles (3.2km) from the spot near the Grand Union Canal where Alice, 14, was last seen.

Alice's disappearance has sparked the Metropolitan Police's biggest search operation since the 7/7 bombings.

The RAF has been drafted in provide an "aerial analysis" to locate areas that should be searched.

Arnis Zalkalns has not been seen since 3 September

Alice, from Hanwell, west London, has been missing since 28 August, when she was filmed on CCTV walking along the Grand Union Canal.

Convicted murderer, Arnis Zalkalns, 41, remains the prime suspect. He was filmed cycling along the canal 15 minutes after Alice.

Mr Zalkalns went missing from his Ealing home on 3 September.

The Latvian was convicted of his wife's murder in 1998 and served seven years in jail before moving to the UK in 2007.

Yellow ribbons adorn homes and railings in west London to raise awareness about the missing girl.

Detectives have also been in the Latvian capital Riga, although Scotland Yard said there was no evidence to suggest Mr Zalkalns was there and stressed he was one of many lines of inquiry.

Alice's parents have urged the public to "please, please help us" in the search for their daughter.

A reward of up to £20,000 is being offered for anyone who has information that leads detectives to find Alice.

Anyone with information is urged to contact the incident room on 0208 358 0100 or 101.