Police are searching a house on Burnholme Grove, in York. The semi-detached house is about half a mile from Claudia Lawrence's house.
A police van was parked outside the property and a number of forensic science officer could be seen inside in white overalls.
The house, which has a drive and pebbled front garden, is about half-way down a quiet cul-de-sac.
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Michael Haines said he wanted to continue his brother's legacy so he would be remembered for his good work rather than his death.
Tomorrow should be a bit quieter in most places, with lighter winds and some lovely winter sunshine.
There will be a widespread frost and ice to watch out for tonight, with some bitterly cold temperatures too.