Police are beginning a drilling and digging operation in the basement of a former home of serial killer Peter Tobin.
The property in Station Road, Portslade, East Sussex, is one of two former homes of Tobin being searched by police.
The other is in Marine Parade, Brighton. Tobin lived at the houses during the 1980s.
Tobin is serving three life sentences for killing Angelika Kluk, Vicky Hamilton and Dinah McNicol.
Sussex Police started their searches at the two addresses last Monday, convinced he claimed more victims as he lived across Britain under different names and trawled the motorways for vulnerable female hitch-hikers.
A Sussex Police spokesman said work in the basement of the Portslade property will start at 9am. It is being carried out on a Sunday to minimise disruption to nearby shops.
Neighbours of the house have had letters delivered to them warning them of the operation.
Tobin was told last December that he would die in jail after he was convicted of strangling 18-year-old Miss McNicol.
The former church handyman was already serving life terms for the murders of 15-year-old Vicky and Angelika Kluk, 23.
Police discovered the remains of Vicky and Miss McNicol buried in the garden of a house in Margate, Kent, to which Tobin moved in March 1991.