Timeline: How events unfolded in London's latest attack

BTP said extra police would be patrolling stations in London and the South East in the wake of the attacks, with armed officers at stations. Police fired 50 bullets to stop the violence, killing the three attackers and wounding one member of the public.

As emergency services sped toward London Bridge, reports came in of multiple stabbings nearby, in the area around Borough Market, a popular gourmet food market surrounded by fashionable bars and restaurants.

Assistant Commissioner Mark Rowley, the Metropolitan Police head of counterterrorism, said that while police believe all the attackers were killed, the investigation is expanding.

"At least 7 dead and 48 wounded in terror attack and Mayor of London says there is 'no reason to be alarmed!'" he said. He said he did not know how serious the injuries were.

Police officers pursued and shot dead three attackers within eight minutes of the first emergency call, authorities said.

Armed officers confronted three suspects, who police said were wearing "hoax" suicide vests, at the market.

Police said they responded to the incident on London bridge at 2208 (2108 GMT).

"My message to Londoners and visitors to our great city is to be calm and vigilant today", Mr Khan said.

Debris and abandoned cars remain on London at the scene of an apparent terror attack on London Bridge in central London on June 3, 2017. A British Transport Police officer and an off-duty officer were among the injured.

British Prime Minister Theresa May has ruled out a possible delay in the June 8 general election following Saturday's terror attack in London.

"It is time to say, enough is enough", she said.

Multiple witnesses reported a vehicle veering off the road and hitting several pedestrians; others also said they saw a man with a knife.

Senate Minority Leader Chuck Schumer said, "My heart is with the people of London, the victims of this string of terrorist attacks, and their families".

They then emerged and attacked some of the people they had hit with the van before heading to Borough Market, where the pubs and restaurants were packed with Saturday night crowds, including many watching the Champions League final between Juventus and Real Madrid in Cardiff.

"All of us at BTP wish him a swift recovery, and I know he will be touched by the hundreds of messages of support from across the United Kingdom and the world".

She said she would still make the trip to the site, but instead to lay flowers and pay respect to those who had been affected by the tragedy. "I we allow these attacks to disrupt our democratic process, then we all lose". It had been raised to critical after the Manchester attack, then lowered again days later.

  • Leroy Wright