U.K. right-wing activist and journalist Tommy Robinson was arrested and reportedly jailed Friday after he filmed members of an alleged child grooming gang entering a court for trial -- but the details of his purported sentence remain murky after the judge ordered the press not to report on the case.

Robinson, the former head of the English Defense League and a longtime activist against Islam and Islamic migration, was arrested after he was filming men accused of being part of a gang that groomed children. Britain has been rocked by a series of child sex scandals perpetuated by gangs of predominantly Muslim men.

Video shows Robinson, whose real name is Stephen Lennon, being surrounded by as many as seven police officers as he livestreamed the incident on his phone. The police informed him he was being arrested for "breach of the peace."

But shortly after his arrest, a source with knowledge of the case told Fox News that he had been jailed for 13 months on a contempt-of-court charge.

A court listing indicated the case was "closed" by Friday afternoon.

One source said he was jailed in Hull Prison. The prison declined to comment to Fox News on whether Robinson was there. Leeds Crown Court also did not return a request for information.