Israeli authorities have visited the office of NSO Group, the maker of the Pegasus spy software.
This was reported by the Israeli Defense Ministry on Twitter.
With Pegasus, journalists, activists and lawyers could have been spied on all over the world.
The authorities visited NSO's office in response to the recent coverage of Pegasus.
According to the ministry, several parties were involved in the inspection.
reports that "representatives from a number of security agencies" visited NSO's office.
It is not known exactly what was investigated.
writes on the basis of a source at NSO that no computer systems or documents of the company have been viewed.
Pegasus has been controversial for years, but has recently come under a magnifying glass after an investigation by international media companies.
They found a list with 50,000 phone numbers of people who might have been targets of the spy software, such as journalists and activists.
NSO Group says it does not agree with the results of the investigation.
According to the company, it is "full of false assumptions and unsubstantiated theories".
NSO also says it has good intentions with the software.
The company describes Pegasus as "technology that helps governments detect and investigate terrorism and crime to save thousands of lives".
See also: Why Pegasus spy software has been controversial for years