Question: Who was the director of a 1999 American action fantasy film in which Arnold Vosloo is known for his roles as Imhotep?

Context paragraphs:
Death Train (2006 film): Death Train is a 2006 action film, starring Arnold Vosloo and Mathis Landwehr.  It was produced by Hermann Joha and directed by Diethard Küster.

Con Express: Con Express is a 2002 direct-to-video action film with a political edge, starring by Arnold Vosloo, Sean Patrick Flanery, and Tim Thomerson.  It was written by Paul A. Birkett and Terry Cunningham and directed by Cunningham.  The movie uses film footage from Runaway Train (1985) and Cliffhanger (1993).

Progeny (film): Progeny is a 1999 American science fiction film.  It was directed by Brian Yuzna and written by Aubrey Solomon and Stuart Gordon.  The film stars Arnold Vosloo as Dr. Craig Burton, Jillian McWhirter as Sherry Burton, Brad Dourif as Dr. Bert Clavell and Lindsay Crouse as Dr. Susan Lamarche.

Darkman (character): Darkman is a title character and the protagonist of the 1990 superhero film "Darkman" and its sequels, "" and "".  The character originated in a short story written by the film's director, Sam Raimi, titled "The Darkman," and is based on the Universal Pictures' movie monsters while retaining traits of the DC Comics World War II disfigured hero the Unknown Soldier.  He was portrayed by Liam Neeson in the original film and Arnold Vosloo in the sequels.

G.I. Joe: Retaliation: G.I. Joe: Retaliation is a 2013 American military science fiction action film directed by Jon M. Chu and written by Rhett Reese and Paul Wernick, based on Hasbro's "G.I. Joe" toy, comic, and media franchise.  It is the second film in the "G.I. Joe" film series, and is a sequel to 2009's "", while also serving as a soft reboot of the franchise.  "Retaliation" features an ensemble cast with Byung-hun Lee, Ray Park, Jonathan Pryce, Arnold Vosloo, and Channing Tatum reprising their roles from the first film.  Luke Bracey and Robert Baker take over the role of Cobra Commander, replacing Joseph Gordon-Levitt.  Dwayne Johnson, D. J. Cotrona, Adrianne Palicki, Ray Stevenson, and Bruce Willis round out the principal cast.

Agent Cody Banks: Agent Cody Banks is a 2003 American spy action comedy-thriller film, directed by Harald Zwart.  Its story follows the adventures of the 15-year-old title character, played by Frankie Muniz, who has to finish his chores, avoid getting grounded, and save the world by going undercover for the CIA as a James Bond type superspy.  Hilary Duff, Angie Harmon, Keith David, Cynthia Stevenson, Daniel Roebuck, Darrell Hammond, Ian McShane, and Arnold Vosloo co-star.  The film was filmed in British Columbia.  It was released in the United States on March 14, 2003.

Once Upon a Time in Vietnam: Once Upon a Time in Vietnam (Vietnamese: Lửa Phật ) is a 2013 Vietnamese action fantasy film directed by and starring Dustin Nguyen along with Roger Yuan.  It was released on August 22, 2013.  This is the first Vietnamese action fantasy film.

Arnold Vosloo: Arnold Vosloo (born 16 June 1962) is a South African-born American actor.  He is known for his roles as Imhotep in "The Mummy" and "The Mummy Returns", Pik van Cleef in "Hard Target", Dr. Peyton Westlake/Darkman in "" and "", Zartan in "" and its , and terrorist Habib Marwan during Season 4 of the television series "24".

The Mummy (1999 film): The Mummy is a 1999 American action fantasy film written and directed by Stephen Sommers and starring Brendan Fraser, Rachel Weisz, John Hannah, and Kevin J. O'Connor, with Arnold Vosloo in the titular role as the reanimated mummy.  It is a loose remake of the 1932 film "The Mummy", which starred Boris Karloff in the titular role.  The film follows adventurer Rick O'Connell, who travels to Hamunaptra, the city of the dead, with an archaeologist and her brother.  There they accidentally awaken Imhotep, a high priest from the reign of the pharaoh Seti I, who has been cursed for eternity.

The Mummy Returns: The Mummy Returns is a 2001 American action-adventure fantasy film written and directed by Stephen Sommers, starring Brendan Fraser, Rachel Weisz, John Hannah, Arnold Vosloo, Oded Fehr, Patricia Velásquez, and Dwayne "The Rock" Johnson.  The film is a sequel to the 1999 film "The Mummy".

Supporting paragraphs: Arnold Vosloo The Mummy (1999 film)
Answer: Stephen Sommers