Andrew Tate was caught in Romania after police stormed his luxurious residence as part of an investigation into human trafficking.
The famous social media icon, 36, had his property inspected by police on Thursday, according to Romanian news source Libertatea.
Andrew, a self-described misogynist who was arrested alongside his brother Tristan, will be questioned by the country's organized crime and terrorism team.
His online spat with Greta Thunberg is thought to be the reason he was arrested - after posing alongside a Romanian pizza box, which may have inadvertently revealed his location to authorities.
'We cannot provide any details at this time regarding alleged reports that they have been detained; however, Andrew and Tristan Tate have the utmost respect for the Romanian authorities and will always assist and help in any way they can,' said a Tate police spokesman.
Tate, who was born in Chicago, has been dubbed "the king of toxic masculinity" for his online rants against women, which have gained him notoriety and millions of followers in the last year.
DIICOT - Romania's police, crime, and investigative agency, claimed in a news statement on Thursday that they had searched five residences after obtaining search warrants.
The warrants were issued as part of an ongoing investigation into an organized criminal organization, international human trafficking, and rape.
Tate got famous after appearing on Big Brother in 2016, but was fired when a video leaked online that appeared to show him beating a lady with a belt - a film he claimed was altered.
Since then, he has earned attention for a series of statements against women, including stating that they "have some culpability" if they are assaulted, which resulted in his being banned from Twitter.