"If I was given the opportunity to do it again, I would do precisely the same," the man identified only as Mohammed B. told a three-judge panel in Amsterdam.
The news agency Expatica Tuesday said the court is expected to deliver its verdict July 26 and may hand down a sentence the same day. The prosecutor asked for life imprisonment.
The defendant also addressed van Gogh's mother.
" I don't feel your pain," he said. "I can't. I don't know what it is like to lose a child that is brought into the world with so much pain and tears."
Van Gogh, a descendent of Theo van Gogh, brother of the artist Vincent van Gogh, was shot dead in Amsterdam in November. The killer left a note pinned to the body that threatened the life of Ayaan Hirsi Ali, a member of the Dutch parliament who had worked with van Gogh on a film about women and Islam.