"Getting hold of a 7.5 tonne lorry - the effects could have been even worse", Haydon told reporters.
Identical knives, with the brand name Ernesto, were carried by Rachid Redouane, 30, and 22-year-old Youssef Zaghba. I decided I had to get my medic up there to help, but I didn't know what the threat was to their safety.
"They are a diverse bunch", he said.
The latest arrest marks the fourth person held over the atrocity on Saturday night, that left eight people dead and scores injured.
After his payment was declined, Butt and his two accomplices rented a small van that they used to plow into crowds on London Bridge before they leapt from the vehicle and went on a stabbing rampage.
It was not clear why he could not pay, or if he lacked the necessary license to drive such a vehicle.
Evening: Butt hires a white Renault van, using a recently-activated mobile phone.
Police radio reported at least three men attacking people with knives and shooting started just behind them, but the officers were not sure what to expect when they arrived near Borough Market.
Armed officers fired nearly 50 rounds, killing three attackers who had plowed a rented van into pedestrians on the bridge, killing three, then jumped out and stabbed Saturday night revelers in Borough Market, an area packed with bars and restaurants.
After leaving the vehicle, the terrorists used 12-inch ceramic knives with pink blades in a stabbing spree.
The three attackers were wearing fake suicide belts consisting of plastic water bottles wrapped in gray duct tape.
In the CCTV, the trio can be seen rushing at a passing pedestrian near Borough Market, raining down a series of blows while police cars approach.
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"Me and my friends wouldn't be alive without the courageous men and women of the Metropolitan Police, London Ambulance Service, the British Transport Police, who dived in with no thought for their own safety", he wrote.
The flammable liquid was put inside 13 wine bottles, some of which were labelled "Baywood: Fruity Rose", and had rags tied to their lids, police said.
Dick became London's first female police chief in April, taking over the sprawling agency also known as Scotland Yard several weeks after a terrorist attack on Parliament.
"They were still fairly close to the van".
The family of an off-duty police officer, Charlie Guenigault, who has been hailed as a hero for running toward the attackers, praised his bravery and said he would likely do the same again if faced with the same situation.
There were also bags of gravel, chairs and a suitcase meant to hide their murderous intent if the rental company or friends asked why they had hired a van. One of the arrests included a man who allegedly worked out at the same gym as 27-year-old Khurum Butt, thought to be the attack ringleader.
There they found an English-language copy of the Koran which had been left open on a page describing martyrdom, along with other items linked to their attack.
Haydon said the men may have been planning even more bloodshed if they made it back to the van. Islamic State claimed responsibility for the attack. He was jailed previous year for encouraging support of IS, which has been linked to numerous militant plots in Britain and overseas.
Butt had been on bail after being arrested for fraud in a case in October, police said.
"I felt that was as reasonably safe a place as we had at the moment, rather than roaming the streets".
"I am deeply shocked, saddened and numbed by the actions of my ex-partner who has killed and injured so many innocent people", O'Leary said in a statement.
The NSA document says Russian military intelligence first targeted employees of a Florida voting systems supplier in August. Humboldt County, population 136,000, might not seem like a top target for the Russians.
Following Friday's 14 strikeouts over seven innings, Kershaw will need just three Ks in his next outing to pass Hunter. The Dodgers picked up left-handed pitcher Jason Wheeler from the Minnesota Twins in exchange for cash considerations.
The force initially said officers were also responding to a reported third incident, in the Vauxhall area of London . London Bridge is closed both ways Transport for London ( TfL ) said, warning the public to avoid the area.
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The concert, which sold out with an attendance of around 50,000, raised over $3 million for the Manchester Emergency Fund. I just want to take a moment to honor the people who were lost, who were taken. "To the families, we love you so much".
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Trump also mentioned his talk with Abbas, telling the audience, "They [Palestinians] are ready to reach for peace". "And (Trump) really does want to work together with Israel in countering the threat from Jihadist Islam".
Lingmerth, whose first PGA Tour victory came at the Memorial two years ago, also bogeyed his last hole on an ideal day for scoring.
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