Cambridgeshire Police are searching a number of properties in March and Wisbech after two men were arrested on suspicion of murdering the 86-year-old.
The arrests come a month after the investigation was re-launched with a fresh team of detectives from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit. The renewed appeal led to several people coming forward with information.
"We have really been encouraged by the response from the public so far.
"We believe there are people out there with information who we haven't spoken to and I would urge them to call police."
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March in the Anglia region has been much drier and sunnier than normal although temperatures have been around average.
Breezy and rather cloudy overnight but mainly dry. On Sunday, becoming wet and windy for much of the morning after a dry start.
It will be a windy weekend with outbreaks of rain at times but also some drier and brighter weather. Feeling milder.