London police responded to two "terrorist incidents" Saturday night following reports of a vehicle plowing into pedestrians on the London Bridge as well as reports of stabbings at Borough Market.
Police said at least seven people were killed and three suspected attackers are dead.
The suspects were wearing hoax explosive vests, police said.
Metropolitan Police tweeted that officers were on the scene and they were working to get more information after reports came in around 10 p.m. local time.
The bridge is closed and people are urged to avoid the area.
Witnesses reported a vehicle hitting pedestrians on the London Bridge and injured people on the ground.
Police said there were reports of stabbings at a busy Borough Market nearby.
Police are classifying the two incidents as "terrorist incidents."
Soon after they responded to a stabbing in the Vauxhall area, over a mile away, but they said that incident is not connected to the others.
Armed officers confronted the three male suspects, who were shot and killed by authorities in Borough Market, Metropolitan Police Assistant Mark Rowley said.
The suspects were confronted and shot by the police within eight minutes of the first call, Rowley added.
The London Ambulance Service says at least 30 people have been taken to five hospitals. British Transport Police said one of their officers was among those injured. He has serious but non-life threatening injuries.
People in the area tweeted video and images of the scene, showing police responding and injured people being treated.
Prime Minister Theresa May says the incident is being treated as a "potential act of terrorism."
“This is a fast-moving investigation," she said. "I want to express my huge gratitude to the police and emergency services who are on the scene. Our thoughts are with those who are caught up in these dreadful events.”
London Mayor Sadiq Khan also called it terrorism, saying in a statement, "The Metropolitan Police are responding to the horrific terrorist attack at London Bridge and Borough Market."
The U.S. State Department condemned the incidents, saying in a statement, "The United States stands ready to provide any assistance authorities in the United Kingdom may request. Our hearts are with the families and loved ones of the victims. We wish a full and quick recovery to those injured in the attacks."
President Donald Trump was briefed on the situation, according to the White House. According to federal law enforcement and national security officials, the National Security Council is monitoring the situation as are the appropriate elements of the FBI and Homeland Security. The situation was described as ongoing and dangerous.
Channel 2's Chris Jose spoke to passengers at Hartsfield-Jackson International Airport who were on their way to London following the incidents.
"Of course it's terrorists. Any attack like that is terrorism, doesn't matter who does it, doesn't matter if it's a British guy, doesn't matter if it's somebody from a Middle Eastern country, doesn't matter if they're American -- it's still terrorism," passenger Cat Heathcote said.
Sam Helliwell, a Manchester native, said seeing the images from London was difficult.
"It's just hard being over here in the states, because we live here now and looking on the news with the things back home, there's nothing we can do. (It's) just so sad for the people at home," he said.
Information from the Associated Press and ABC News was used in this report.
