In an interview with the Wall Street Journal, Samuel L. Jackson, who played the S.H.I.E.L.D. leader Nick Fury in the hit 2012 movie "The Avengers", confirmed that Elizabeth Olsen, the younger sister of famed twin actresses Mary-Kate and Ashley Olsen, will have a starring role in the sequel, "The Avengers: Age of Ultron."

"I don't know what she's doing, if she's on the inside or outside. I haven't seen a script," said Jackson.

Olsen was rumored for a role in the movie back in August when the website Bleeding Cool reported that she would play as the superheroine Scarlet Witch. Saoirse Ronan was allegedly the first choice for the part but she recently shot down those rumors as "online stuff."

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The movie's director Joss Whedon, who directed the first "Avengers", as well as hit films such as "Thor," "Captain America: The First Avenger," and "The Cabin in the Woods," has been a fan of Scarlet Witch and her brother Quicksilver for a while.

"I've got these two characters [in the first draft of my script] -- my favorite characters in the comic book, a brother and sister act. They're in the movie, that's exciting," he said. As for Quicksilver, "Kick-Ass" star Aaron Taylor-Johnson is rumored to play his role, but has not been confirmed yet by Marvel or Jackson.

According to Jackson, filming for "Age of Ultron" begins in March 2014 in the famed Pinewood-Shepperton Studios in the UK, where popular movies such as "Thor 2" was shot and where "Guardians of the Galaxy" is currently being shot.

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Olsen has been a rising star since her role in the hit film "Martha Marcy May Marlene" and is set to appear in hit films such as Spike Lee's "Oldboy" and as the female lead character in "Godzilla." It's natural that she would take on a comic book character role as she was also rumored to play in the upcoming reboot of "Fantastic Four."

Cast members from the first movie, including Jackson, Robert Downey Jr., Mark Ruffalo, Chris Evans and Scarlett Johansson, are set to reprise their respective roles once again. "Boston Legal" actor James Spader is set to play as the movie's villain, Ultron. "The Avengers 2: Age of Ultron" is expected to hit cinemas on May 1, 2015.

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