Transcript for Latest updates from Borough Market after London attack

Everyone Terry Moran with a ABC news here in London on subjects street just a few blocks. Away again there from moral market and be on that London Bridge the scene about four hours ago now. Along horrific terror attack using. The low tech high terror tools that so many cities have been confronted with a vehicle a large white man. Going off the road on the London Bridge heading south plowing into pedestrians. Casualties there we are told and then. Metropolitan police are saying at least three men leaving that vehicle armed. Eyewitnesses say with long knives and descending apparently into the Borough market this is a a famous world famous food market and place of restaurants and and night life it is really were very popular and unique place in London. On Saturday night it would be full of people enjoying themselves on on an English summer night. And in that moment. They were attacked by at least three men with long knives and many casualties there. Then following that apparently there were gunshots. Police confirming that eyewitnesses saying that it looked as if the police were managing to take down at least one of the attackers this coming. In a city and at a time. Of terror in Britain and across Europe. Just a couple of weeks ago in Manchester. A horrific bombing at the Ariane grundy county before that in March. Just a few blocks from here at Westminster bridge. Where there was a vehicle coming off the road and then an attack and stabbing of a police officer right at the doors the gates the halls of parliament. Is a fact of life in London and in Europe and then in Britain more broadly. How to people deal that got really one of the wolf first before we get to that. This situation is not officially over we are at a police perimeter which is still being strictly enforced we see. Police vehicles and emergency vehicles ambulances still heading down to the scene of the attack. And we have helicopters overhead. But this bill. Feeling here is that it is not an active situation if it war I guarantee there would be more police officers we would probably be farther back there are going through. What was the scene. Of these twin attacks the vehicle attack followed by the knife attack. So then what does this mean for the people of Britain first they are once again. Going through that period of grief shock and horror and rage of morning. The victims of a terrorist attack and then afterwards reckoning Heidi stock beneficent. These little old. Technology attack and long knives a vehicle things you cannot ban. Things you cannot even really register or police with any great efficiency. Being used to inflict tremendous. Carnage and terror honest it. There's no question that this is going to stir people's anger. And this is right on the eve of a general election here in Britain prime minister Theresa may. Runners standing as they say you're running for. Term of her own she was elected by the Conservative Party after the wreck to vote. This will play right into that election out so it remains to be seen but at some point there's no question. That people in this city in this country and in other countries in Europe are going to demand greater safety. From even these kinds of attacks already we have seen starring. Right wing. Very extreme responses to these two these attacks. But it is that it is a problem. That is bitter and deep and abiding in these countries. So once again right now what we have is is a police perimeter. Which is being enforced still a situation that remains ongoing. But it looks as if it is it right now under control there may still be attackers on the loose however. Police said at least three man. Emerged from the vehicle that attack on London Bridge. To attack the world market and so it may be that they are still on the hunt for others several. The London Underground subway stations around this area have been shut down. Another sign. That there are going through this area trying to determine what if any threats remain to the general public. One final note. This is the heart of London a great student World Series on Saturday night when people are out just as they were in Paris. When the boxer climate. Cafes were attacked. If there happens at their most urban rate this is like people live in cities to live in places like to come to places like world market. And to be. The focus of such a slaughter such a level of hatred and violence. Is it is and what life has become in many cities here. And British have a famous stiff upper lip. And certainly will soldiers through as I saw in Manchester just a couple of weeks ago as it fell off. In London and Westminster bridge and going all the way back to it 77 attacks more than a decade ago. But there's no question that at some point this is going to tax. The democracy here as people try and figure out how to keep themselves. From these kinds of attacks this is Terry Moran. In London just a few hours after the London Bridge in Borough market attacked.

This transcript has been automatically generated and may not be 100% accurate.