12 Arrests Made In London Attack Investigation

Police investigating the London Bridge terror attacks which left seven people dead and dozens more injured have arrested 12 people.

They were detained after an armed raid in Barking, east London, the day after the van and knife rampage by three terrorists who were shot dead by police.

Scotland Yard said the investigation into the "horrific attack" at London Bridge and Borough Market was progressing rapidly with officers searching several addresses in the area.

The arrests in connection with the attacks came as Prime Minister Theresa May warned that Britain is in the grip of a spate of copycat terror plots and it emerged that an off-duty Metropolitan Police officer was among the 48 people injured by the terrorists.

The attackers brought carnage to the streets of the capital brandishing 12-inch knives, shouting "this is for Allah".

Police were called at around 10.08pm on Saturday to reports of a vehicle striking pedestrians on London Bridge.

The white van then continued to drive to Borough Market.

Three men then left the vehicle and began to stab and injure people, including a British Transport Police Officer and the Scotland Yard officer, neither of whom is believed to be in a life-threatening condition.

A number of the 48 injured are suffering serious and life-threatening injuries.

The suspects were confronted and shot by police at Borough Market within eight minutes of the first emergency call being made.

The trio were wearing what appeared to be explosive vests, with police later confirming they were fake. Mrs May said they were "worn only to spread panic and fear".

It was the third terrorist outrage to hit the country this year following the Westminster and Manchester attacks which altogether have killed 34 people.