COPENHAGEN, (Reuters) – A Moroccan-born Dane charged with inciting fellow Muslims to violent holy war must remain in custody for another four weeks, a Danish judge ruled on Friday.

Said Mansour, 45, is the first person to be charged under a Danish anti-terrorism law enacted in 2002 in the aftermath of the Sept. 11 attacks on the United States in 2001.

&#34He must remain in custody until Jan. 20,&#34 judge Jens Stausboell told Reuters, declining to give further comments as the court meeting was held behind closed doors.

Mansour was arrested on Sept. 8 and accused of producing and distributing videotapes, CDs and DVDs that police said contained &#34inflammatory, jihadist speeches&#34 and footage of beheadings in Chechnya.