Online free speech advocates were up in arms Sunday after British Prime Minister Theresa May called for allied governments to "regulate cyberspace" in the wake of the terror attack in London on Saturday night.

May suggested more must be done to prevent homegrown extremism sparked by conversations on the internet, in hopes of cracking down on Islamic State-inspired terrorism.

"We cannot allows this ideology the safe space it needs to breed, yet that is precisely what the internet and the big companies that provide internet-based services provide," she said at a news conference. "We need to work with allied democratic governments to reach international agreements that regulate cyberspace to prevent the spread of extremist and terrorist planning."

Britain has seen a surge in terrorist activity recently, with three attacks in the last three months. Twenty-two people died in a suicide bombing after an Ariana Grande concert in Manchester on May 23, in an attack allegedly carried out by a 22-year-old Brit. Prior to that, a 52-year-old died after killing four people in a vehicle and knife attack on Westminster Bridge in March.

Both suspected attackers were born in Britain and had reportedly travelled to the Middle East before launching their respective attacks.

Social media giants Google and Twitter said they are committed to cracking down on terror-related content in separate statements on Sunday.

"We continue to expand the use of technology as part of a systematic approach to removing this type of content,” said Nick Pickles, Twitter’s U.K. head of public policy.

Google said, "We are committed to working in partnership with the government and NGOs to tackle these challenging and complex problems, and share the government's commitment to ensuring terrorists do not have a voice online."

With this most recent London attack coming in the middle of an election race, May and her primary opponents agreed to pause their campaigning for the day. However, some critics suggested May was breaking that agreement by pushing internet regulation. Such measures are a key element of her election platform.

-With files from The Associated Press

 

North Korea, Iran, China and Saudi Arabia are among the more prominent countries that currently regulate internet content.

With files from the Associated Press