A Scotland Yard statement said:
"Police attended an address in Albert Square to execute an arrest warrant at approximately 9am... While officers from Newham attempted to arrest a male suspect, they were attacked by a pit bull-type dog.
"A dog unit was called to the scene and CO19 Specialist Firearms Command also attended. The dog was contained and subsequently shot dead."
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A petition for a statue of rapper Missy Elliott to replace a Confederate monument in Virginia has been signed by more than 15,000 people.
Grace Mugabe, the wife of Zimbabwean president Robert Mugabe, has returned home from Johannesburg.