Three police officers were injured as they arrested a man brandishing a 4ft sword who repeatedly shouted "Allahu Akbar".
The Metropolitan Police is still questioning the suspect.
On Sunday, a 30-year-old man was detained at an address in west London, where a search is being carried out, the Met Police said.
He was arrested on suspicion of terrorism offences.
Earlier, a 26-year-old man initially arrested onsuspicion of grievous bodily harm (GBH) and assault on police was further arrested under the UK's Terrorism Act 2000, the Metropolitan Police said on Saturday.
"The officers acted very quickly to detain him. During a struggle three officers sustained minor injuries. The man, who repeatedly shouted Allahu Akbar, was incapacitated with CS spray (tear gas)," the Met Police said.
"As they challenged the driver, who was the only occupant in the car, he reached for what we now know to be a four-foot sword which was in the front passenger foot well...The incident is being treated as terrorism but we will remain open minded while the investigation continues," the Met said.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
