In response to these incidents, police have posted a shelter-in-place graphic to Twitter, telling people in the areas to run or hide and to alert police when it is safe to do so. The BBC cited police as saying there had been more than one fatality.
Metropolitan police said early Sunday that the vests were fake.
- Who? It was not clear who might be responsible for the attack.
London Bridge is one of the main arteries leading into the heart of the City business district in the British capital.
A van has mounted the pavement on London Bridge before a stabbing attack, according to witnesses.
The London Ambulance Service said there were at least 20 people injured in the attacks on Saturday night. The Sun reported that three men with "hunting knives" jumped out of vehicles and starting stabbing people.
Witnesses described a white van careering into pedestrians near London Bridge and knocking over several people. "It looked to me that the van was aiming at the people". The assailant and four other people were killed, and 40 others were injured.
Rain threat looms large over Pakistan, India encounter
India versus Pakistan match is a huge occasion not only for the sports perceptive, but it do involves the mood of the two nations. Pakistan have fallen behind Bangladesh in terms of being in touch with modern limited-overs cricket as well as the rankings.
"It was horrendous", he said.
He said bar staff initially told everyone to evacuate the area and then sent people back downstairs when it emerged how serious the situation was. "The patrons sheltered in the basement and police then arrived at the scene".
Nick Brandon of British Transport Police said the force had received reports of "multiple" casualties.
The van crashed into fences by Southwark Cathedral and the railway bridge.
The photo, taken outside the Wheatsheaf pub in Borough Market, shows a man wearing camouflage pants and with some kind of device attached to his torso on the ground. "Everyone in the bar started pushing people from the exits", one witness who gave his name as Brian, 32, told Reuters. "We were shouting "stop, stop" and people threw chairs at them", the chef said.
"Around the corner there was a guy with a stab wound on his neck".
"By the time I realized I was going the wrong way home, it happened", Sciotto told the Daily News. But they said later that turned out to be an unrelated stabbing.
It is the second reported terror attack in London this year.
Criminal expert: Tiger Woods made mistake issuing statement
Woods was arrested Monday on suspicion of DUI and spent almost four hours in jail before he was released on his own recognizance. Nicklaus said during a news conference on Tuesday ahead of his Memorial Tournament that he felt bad for the former World No 1.
"We have now taken over 30 patients to five hospitals across London following the incident at London Bridge".
"Whatever the United States can do to help out in London and the UK, we will be there - WE ARE WITH YOU".
"They have not been able to confirm to us that at this stage all of the terrorists have been accounted for".
London's Metropolitan Police said the events were being treated as "terrorist incidents".
The Sun newspaper, whose offices are beside London Bridge, reported hearing explosions about three hours after the attacks began.
"There was one man who said he had been slashed in the face".
Vanity Fair reveals 4 new covers for 'Star Wars: The Last Jedi'
After delivering the first teaser in April, promotion for Star Wars: The Last Jedi ramps up, as the film's stars cover Vanity Fair .
- Mayors Want to Take Lead on Climate After Trump's Paris Announcement
- Multiple deaths in London vehicle and stabbing incidents
- Warriors' Kevin Durant Wanted To Marry Rihanna When He Was Younger
- British PM May seen 13 seats short of majority - YouGov
- Rihanna in Matthew Adams Dolan at the NBA Finals Game 1
- London attack: Six killed in vehicle and stabbing incidents
- Cavaliers need heart, pride, fewer mistakes in Finals
- Train stabbing survivor: Portland has 'white saviour complex'
- Nashville Predators vs. Pittsburgh Penguins - 6/5/17 NHL Pick, Odds, and Prediction
- US adds modest 138000 jobs, dropping unemployment to 4.3 percent