Nicolas Chartier, at right, will not be allowed to attend the Oscars with his fellow Hurt Locker producers, from left: screeenwriter Mark Boal, director Kathryn Bigelow and producer Greg Shapiro. (Joel Ryan/Associated Press)

The Hurt Locker producer caught illegally campaigning for the Iraq war drama ahead of the Oscars has been barred from Sunday's Academy Awards gala.

The U.S. Academy of Motion Picture Arts and Sciences has ruled that Nicolas Chartier, one of the film's four producers, will not be permitted to attend the lavish Oscar ceremony. The other producers listed in the nomination — Greg Shapiro, director Kathryn Bigelow and screenwriter Mark Boal — are still free to attend.

If The Hurt Locker goes on to win the coveted best picture trophy, Chartier will still receive an Oscar for his participation in the film, the executive committee of the producers branch of the academy announced Tuesday, as voting closed in advance of the weekend award ceremony.

"It will not cloud what the night is. This was an individual thing that happened. It's been dealt with, and now we're going on to the show," said academy president Tom Sherak.

Last week, Chartier sent out several emails to certain academy members urging them to vote for The Hurt Locker — Bigelow's gritty war drama — rather than the blockbuster 3-D film Avatar, directed by Bigelow's ex-husband, Canadian filmmaker James Cameron.

Academy rules prohibit communications that "attempt to promote any film or achievement by casting a negative light on a competing film or achievement."

Chartier apologized in a subsequent email, citing his "naiveté, ignorance of the rules and plain stupidity as a first-time nominee."

With files from The Associated Press