From Reuters:
"AMSTERDAM (Reuters) - The suspect arrested for the killing of a controversial Dutch filmmaker had ties with Islamic extremists and was a friend of a terrorist suspect, Dutch newspapers said on Wednesday. Amsterdam police declined to comment on the information or their investigation. 'He is under arrest, but I can't say where he is or what we are doing,' a spokesman said.
Filmmaker Theo van Gogh, who had been accused by Muslims of ridiculing their religion, was shot dead on his bicycle on Tuesday. Two knives were left in his body, one pinning a note to his chest.
"The Volkskrant newspaper said the 26-year-old suspect, who has dual Dutch and Moroccan nationality, was known to national security services but was not among a group of 150 Muslims the AIVD security service is monitoring. De Telegraaf paper said the suspect was a friend of Samir Azzouz, whose arrest in June provoked a national 'terror alarm' after detailed maps of buildings and weapons were found in a house search.
"A picture on the front page of De Telegraaf showed the body of filmmaker Theo Van Gogh lying on the street with two knives sticking out. Police had no comment on the note pinned to his chest. Dutch media said on Tuesday it contained lines from the Koran, the Muslim holy book.
"Van Gogh, 47, a great grandson of the brother of 19th century Dutch painter Vincent van Gogh, had stirred controversy with newspaper articles, books and films voicing his contentious views on Islam after the Sept. 11, 2001, attacks on the United States."