A shooting that left seven dead in Santa Barbara was impossible to prevent and impossible to predict, a former homeland security secretary has said.
Janet Napolitano, also the current University of California president, told the Associated Press she was "shocked and deeply saddened" and was sending thoughts and prayers "to the victims of this tragedy, their families and the entire Santa Barbara community".
Elliot Rodger, 22, was confirmed by his family's attorney as the California gunman that killed six people, NBC News reported earlier.
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Philip Hammond has dismissed concerns that abolishing stamp duty for first-time buyers will push up house prices.
Elsewhere it will be largely sunny, though with gusty winds at times, and a few showers likely in places.
Heavy rain has caused widespread flooding and travel disruption across north west England and North Wales.