Police in London have made two more arrests in connection to Wednesday's attack on Westminster Bridge and Parliament.
Appeal to the public that if anyone knows the attacker, his associates or recent movements, they should contact the police.
CNBC's Willem Marx has the latest news surrounding London's terror attack Wednesday and the subsequent police investigation.
Mouhammed Choukeir, chief investment officer at Kleinwort Hambros, adds that policymakers and businesses have taken recent terror attacks "on the front foot."
CNBC's Willem Marx gives the latest updates from Westminster Bridge on Wednesday's terror attack the police investigation.
Masood had a range of convictions, including assault and possession of offensive weapons.
U.S. Secretary of State Rex Tillerson has directed U.S. diplomatic missions to identify "populations warranting increased scrutiny."
The cabin baggage ban on laptops and tablets on some direct flights to both the U.S. and U.K. has been questioned over fire safety.
The strategy of terror attackers in western Europe and beyond has shifted, one analyst tells CNBC.
CNBC's Willem Marx reports the latest details on the investigation into the deadly attack in London.
Here's how the world's media reacted to the news of the worst London terror attack in more than a decade on Wednesday.
The Islamic State is claiming responsibility for the terror attack in London, according to a report in the news wires.
"There is often a support mechanism, Jack Tomarchio tells CNBC as British authorities continue to investigate Wednesday's terror attack.
CNBC's Willem Marx reports the latest details on the investigation into the deadly attack in London that left four people dead and 40 injured.
Anne-Marie Slaughter, New America CEO, discusses a strategy that fights global threats by looking at the links between groups.
Jack Tomarchio, former DHS official, talks about the deadly attack in London and the difficulty in preventing these attacks in a free society. It's not just an immigrant issue, says Tomarchio.
The U.K. will not waiver under the threat of terrorism, Prime Minister Theresa May has said in an announcement to the House of Commons Thursday.
Leader of the U.K. Labour Party Jeremy Corbyn addresses Parliament, adding that communities are united by the "human impulse of solidarity."
British Prime Minister Theresa May addressing Parliament confirms earlier reports that the attacker was British born but says there is no reason to believe there are further imminent attacks.
U.K. Prime Minister Theresa May adds that the policing and security around the Houses of Parliament is being reviewed.