A woman appears to have been mauled to death after she reportedly went to feed pet dogs belonging to her daughter.
"She had sustained a number of injuries. An investigation is under way to establish a cause of death," a Scotland Yard spokeswoman said.
A post-mortem examination will be carried out on Thursday.
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The singer had been tweeting in support of migrants when she was bombarded with abusive messages.
Ministers are reportedly considering plans in a bid to lower inward migration.
In a tweet on Saturday, the US president didn't give a reason for his absence but said he wished"everyone well and have a great evening".