Alice Gross investigation: Police carry out reconstruction

A police reconstruction of 14-year-old Alice Gross's last known movements on 28 August, along the Grand Union Canal in west London, has got under way.

The investigation team has followed at least 729 lines of inquiry, spoken to 1,067 people and taken more than 1,000 calls but there have been no confirmed sightings of Alice.

Police are also looking for convicted murderer Arnis Zalkalns.

The 41-year-old Latvian was filmed cycling along the canal 15 minutes after Alice was seen and went missing from his Ealing home on 3 September.

He was jailed for his wife's murder in 1998 and served seven years in jail before moving to the UK in 2007.

Matt Prodger reports from Hanwell in West London.