CHICAGO (AP) - Oprah Winfrey decided Monday to pull an already-taped episode of her talk show that was to mark the 10th anniversary of the Columbine High School massacre, saying it "focused too much on the killers."

The episode, "10 Years Later: The Truth about Columbine," was to air on the Monday anniversary of the massacre in Littleton, Colo., that killed 12 students and a teacher. "I decided to pull the Columbine show today. After reviewing it, I thought it focused too much on the killers. Today, hold a thought for the Columbine community. This is a hard day for them," Winfrey wrote on Oprah.com and her Facebook page. A similar message appeared on her Twitter feed.

A Harpo Productions Inc. spokeswoman confirmed the posts. Columbine Task Force lead investigator Kate Battan, FBI special agent Dwayne Fuselier, Dave Cullen - author of the book "Columbine" - and Columbine High School principal Frank DeAngelis had taped the episode of "The Oprah Winfrey Show."

Winfrey said a program about a mother released from prison would run in place of the Columbine piece.

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