Gardaí investigating the murder of Ana Kriegel in Dublin are examining CCTV from private homes in a bid to trace her final movements.
The body of the 14 year old was discovered in a disused building on the Clonee road in Lucan last Thursday.
Gardaí are still waiting on the results of some DNA tests which they hope will help identify her killer.
A number of teenagers have come forward to give accounts of when they last saw Ana - however no arrests have yet been made.