LONDON (Reuters) - Police brought in two dogs to help their search of a house in Margate on Monday where the bodies of two teenage girls have been found.

The Spaniels, supplied by Surrey Police, will help identify any areas in the house of particular interest, police said.

Preparation of the ground floor, including drilling through concrete floors, took place during the weekend.

Ten so-called hotspots, indicating disturbances or "surface anomalies" in the building's fabric, were discovered by forensic archaeologists using ground-penetrating radar, media reports said.

These could be explained by house renovations, or could yield further results.

Last week, officers found the body of Vicky Hamilton, 15, and that of another girl who they believe to be Dinah McNicol, 18, during an extensive search of the garden at the house in Kent, 16 years after they disappeared.

Handyman Peter Tobin, 61, said by media to have once owned the house, has appeared in a Scottish court accused of murdering Hamilton.

Reports said at least nine other properties linked to Tobin during the past 40 years could be searched. They include properties in Hampshire, Brighton and Scotland.

Police finished the search of the garden in Margate during the weekend.

Detective Superintendent Tim Wills said on Saturday: "It has been a long week of intense physical work, the team encouraged by yesterday's sad discovery, is determined to continue with this for as long as it takes to complete the task we came here to do."

Officers launched their search in a bid to find out what happened to McNicol, who vanished after failing to return home after a music festival.

She never reached her home in Essex after leaving the festival at Liphook, Hampshire, in the summer of 1991.

Hamilton's remains were found a few days earlier in a sandpit in the house's garden. She disappeared from Bathgate, West Lothian, in Scotland, also in 1991.