Tate, 37, and his brother Tristan Tate were detained Monday evening on allegations of sexual aggression in a UK case dating back to 2012-2015, spokesperson Mateea Petrescu said.
She said the Bucharest Court of Appeal is set to make a "pivotal decision" on Tuesday on whether to execute the warrants issued by UK's Westminster Magistrates Court.
Tate is charged in a separate case in Romania with rape, human trafficking and forming a criminal gang to sexually exploit women. He was arrested near Bucharest in December 2022 along with his brother and two Romanian women.
Romanian prosecutors formally indicted all four in June last year and they have denied the allegations.
Andrew Tate, who has amassed 8.7 million followers on the social media platform X, has repeatedly claimed that Romanian prosecutors have no evidence against him and that there is a political conspiracy to silence him.
He was previously banned from various prominent social media platforms for expressing misogynistic views and for hate speech.
After their arrest in Romania, the Tate brothers were held for three months in police detention before being moved to house arrest. They were later restricted to the areas of Bucharest Municipality and nearby Ilfov County.
In January, Tate won an appeal challenging the seizure of his assets by Romanian authorities, which were confiscated in the weeks after he was arrested.
Romanian authorities had seized 15 luxury cars, 14 designer watches and cash in several currencies worth an estimated 3.6 million euros ($A5.9 million).
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