The shooter who attacked a Planned Parenthood clinic on Friday may have had political motivations, using the phrase "no more baby parts" and expressing opposition to abortion and government as he was later interviewed, law enforcement officials say.

Robert Lewis Dear, Jr., attacked a clinic run by the women's health and abortion provider in Colorado Springs, Colo., on Friday, killing a police officer and two others. Officials caution they're still trying to discern Dear's motive, but one official said Saturday, "He was definitely politically motivated."

The attack came as Planned Parenthood is under fire by Republicans for providing and getting compensated for providing aborted fetal body parts for medical research. The group's involvement was widely publicized by undercover videos obtained by anti-abortion investigator David Daleiden.

Some anti-abortion groups and Republicans have condemned the attack, saying there's no justification for mass killings even at a group they oppose.

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