It also recalled an attack on Westminster Bridge when 52-year-old British Muslim convert Khalid Mahmood rammed his auto into pedestrians before crashing into the barriers surrounding parliament and then stabbing a police officer to death.
Emergency personnel on London Bridge as police are dealing with a "major incident" at London Bridge.
Police also responded to a stabbing incident in the Vauxhall area, but said it was unconnected to the London Bridge and Borough Market incidents. Armed police responded and shots were fired, police said.
London Mayor Sadiq Khan has condemned the incidents at London Bridge and on Borough Market, describing them as "a deliberate and cowardly attack on innocent Londoners".
Witnesses have said they saw an attacker "coldly" carrying out stabbings with a large blade in Borough market.
London Ambulance have said: "We're responding to this incident and more information will follow when we have it".
There have also been unconfirmed reports from witnesses to Reuters, BBCNews, CNN and The Telegraph of stabbings.
"Now the area is completely closed with police cars going one way and ambulances going the other", he told Reuters. And people just tried to get out of the way of the van.
The UK is still reeling from a suicide bombing in Manchester earlier this month, which killed 22 people, many of them children, following a concert.
Some passersby told The Spectator's Will Heaven they saw 15-20 people struck on the bridge, while others said they saw 7-8. "And there were groups of people helping those people on the ground", he said.
London Bridge has been closed down. "He swerved right round me and then hit about five or six people".
Officers were seen dragging startled diners and revellers out of restaurants and bars and telling them to run.
Flying objects shot down after crossing North-South border
The South responded with machine-gun fire after an unidentified North Korean aircraft crossed the DMZ early previous year . It traveled about 310 miles (500 kilometers) before landing in the Sea of Japan, according to South Korea's armed forces.
At least two people have died as a result of the van attack, according to The Telegraph.
A stabbing also took place near the initial incident.
I didn't see the van mount the curb, but I saw everything else.
The patrons sheltered in the basement and police have arrived at the scene, the witness said.
Tony Murphy, who lives near the area, told Sky News he heard the sound of gunfire.
On March 22, Khalid Masood ploughed a rented vehicle into pedestrians on Westminster Bridge and stabbed a policeman to death before being shot dead.
Chelsea midfielder Cesc baffled by Wembley bench role
There is no reason that the Gunners can not play the way they did against Chelsea in the cup final in every game. Chelsea were reduced to 10 men in the FA Cup final after Victor Moses received a second yellow card for diving.
Griffin shared today, it was deeply inappropriate and runs contrary to the core values our company stands for". A long-running feud with Sarah Palin prompted the former Alaskan governor to label Griffin a "bully".
"Great win in Montana ", Trump told reporters in Italy today without being asked, according to pool reports. On Thursday, House Minority Leader Nancy Pelosi ripped Gianforte, as a " wannabe Trump ", The Hill reported.
Tomic is blessed with huge ability and can frustrate opponents, but clay is a surface that he endures rather than enjoys. But also, I realized I had to put some balls in the court, so that would be my main focus at that point".
When asked to spell " hospitality ", Propper requested the word's definition from pronouncer Jacques Bailly. It's hard and it's stressful but its so good for these kids to get together and have this thing in common.
The cores of even more massive stars can collapse past the neutron star state, disappearing from the observable universe. The LIGO system features two widely separated observing stations to make sure a local vibration is not misinterpreted.
There is nothing unusual about this, given Trump's penchant for late-night tweets that often result in widespread controversy. After deleting the tweet , Trump , sphinx-like, wrote , "Who can figure out the true meaning of "covfefe"??? ".
I feel like this: If my 76ers had the chance, I'd like to see them do a 50's Celtics and just be in the finals year after year. They may be defending champions and they may have LeBron James , but against Golden State, they are definite underdogs.
AMD's 'TR4' Threadripper CPU socket is huge
Last were the announcements of Ryzen CPUs and RX 500 GPUs being integrated into the mobile platform of laptops and notebooks. But information about high-end desktop processors is not the only news AMD had to share at this year's Computex.
Tiger Woods asleep at wheel when arrested on DUI charge
New details have emerged in the arrest of Tiger Woods on a charge of driving under the influence and they don't sound good. This comes as he is close to breaking PGA Tour win and major win records held by Sam Snead and Jack Nicklaus.
Rabada: If we play well, we can win this thing
England continued to try to attack their way out of trouble, and paid further price with two more wickets in the same over. We are pretty sure [of our best XI] but we have 15 really good players and the team can change at any time .
Roland Garros-2017: fiasco Kerber, loud comeback Kvitova
Former world No.1 Jelena Jankovic has defeated Richel Hogenkamp of the Netherlands 6-2 7-5 to progress to the second round. Before the Australian Open in January, Schiavone (pronounced skee-ah-VOH-nay) announced that she would retire this year.
Trump's budget director defends plans to cut social programs
Paramedics hospitalized over a dozen people who were sick in the downtown area where the homeless gather during the incident. Social Security's trust funds are projected to run dry in 2034 and Medicare's is projected to run out of money in 2028.
Trump in Italy for second day of G-7 meetings
Trump told Macron he is under "heavy" pressure back in the USA on the climate accord brokered by the Obama administration in 2015. Cohn also said "His basis for decision ultimately is going to be what's best for the United States,".