WASHINGTON (Reuters) – The United States imposed sanctions on China’s Integrity Technology Group on Friday, accusing it of being behind a hacking group known as “FlexTyphoon.”

In a statement, the State Department said Integrity Tech was a major Chinese government contractor with ties to the Foreign Ministry and that its hackers were working at Beijing’s direction to target critical infrastructure in the United States and abroad.

Western authorities have previously accused the Beijing-based company of being behind the Flex Typhoon. In September, FBI Director Christopher Wray accused the company of “gathering intelligence and conducting espionage for Chinese state security agencies.”

In an advisory published at the same time, US, British, Canadian, Australian and New Zealand cyber authorities accused Integrity of compromising more than 250,000 devices worldwide.

Chinese officials have previously accused the United States and its allies of “jumping to unnecessary conclusions and making baseless accusations against China” in relation to Samit and the Flex Typhoon.

The hacking group is one of a series of Chinese cyberspies that have come under scrutiny in recent months for targeting sensitive data and critical infrastructure. Other groups include the so-called “Volt Typhoon,” which U.S. officials fear is preparing for a collision with the United States, and the “Salt Typhoon,” which has engulfed U.S. telecom companies.

Last week, US Treasury officials said an unidentified Chinese hacking group broke into the department’s computers and compromised an undisclosed amount of data. The Washington Post later reported that the target was the Treasury’s sanctions office.