5G phone masts are being set alight in the UK, after online conspiracy theories have misleadingly linked the cell towers to the coronavirus pandemic. The BBC reports that at least three 5G towers were set alight within the last week, and police and fire services were called to extinguish the flames.

“I’m absolutely outraged and disgusted that people would be taking action against the infrastructure we need to tackle this emergency,” said Stephen Powis, the National Health Service (NHS) director, at a daily UK coronavirus briefing. Police have now launched investigations into how the 5G towers caught fire.

Rumors and conspiracy theories over a link between the roll out of 5G and the spread of coronavirus have been spread primarily through social media networks. A variety of groups exist on Facebook and Nextdoor, where thousands of members repeat false and misleading claims that 5G is supposedly harmful.

One theory claims that the novel coronavirus originated in Wuhan because the Chinese city had recently been rolling out 5G. It’s now supposedly spread to other cities that are also using 5G. These false conspiracy theories neglect to mention that a highly contagious virus would naturally spread more in densely populated cities with access to 5G, and that the coronavirus pandemic has hit counties like Iran and Japan where 5G isn’t in use yet.

There is no scientific evidence that links the coronavirus pandemic to 5G, nor any immediate negative health effects to 5G. Full Fact, an independent fact checking charity in the UK, has explored the claims after a British tabloid newspaper highlighted them recently. 5G uses a higher frequency of radio waves than 4G or 3G, but regulators in the UK have recorded 5G electromagnetic radiation levels well below international guidelines.

This is the consequence of those bonkers Facebook conspiracy theories about 5G. Key workers getting harassed on the street. pic.twitter.com/5z35r6sabp
— Charlie Haynes (@charliehtweets) April 2, 2020

This hasn’t stopped these wild conspiracy theories from spreading, though. Some people are even harassing workers laying fiber optic cables for 5G installations, claiming that when 5G is turned on it’s going to “kill everyone.”