COLORADO SPRINGS, Colo

. - Robert Lewis Dear told authorities "no more baby parts" after being arrested for the shooting of a Colorado Planned Parenthood clinic, according to a law- enforcement official, part of a rambling statement that investigators are parsing to understand the reasoning behind an assault that left three dead.

Colorado Springs police yesterday said they would not disclose any information on the motive for the attack, a move that guarantees further speculation over the intention of Dear, whom acquaintances described as an odd, reclusive loner, as he prepares for his initial appearance in state court today.

Planned Parenthood cited witnesses as saying the gunman was motivated by his opposition to abortion. He killed a police officer and two civilians who were accompanying separate friends to the clinic: Jennifer Markovsky, 36, a mother of two and Ke'Arre Stewart, 29, an Iraq War veteran and father of two.

The law-enforcement official who recounted Dear's statement spoke on condition. The official said the "no more baby parts" comment was among a number of statements he made to authorities after his arrest, making it difficult to know his specific motivation.

Still, U.S. Attorney John Walsh said investigators have been in touch with lawyers from the Justice Department's Civil Rights and National Security divisions, suggesting officials could pursue federal charges in addition to state homicide ones. One possible avenue is the 1994 Freedom of Access to Clinic Entrances Act, which makes it a crime to injure or intimidate clinic patients and employees.

The attack thrust the clinic to the center of the debate over Planned Parenthood, which was reignited in July when abortion foes released undercover video they said showed the group's personnel negotiating the sale of fetal organs.

Planned Parenthood has denied seeking any payments beyond legally permitted reimbursement costs for donating the organs to researchers. Still, the National Abortion Federation says it has since seen a rise in threats at clinics nationwide.

Vicki Cowart, the regional head of Planned Parenthood, said Sunday on ABC's "This Week" that the organization has faced hateful speech.

"I can't believe that this isn't contributing to some folks, mentally unwell or not, thinking that it's OK to - to target Planned Parenthood or to target abortion providers," she said.

Colorado Gov. John Hickenlooper on CNN's "State of the Union" called the attack "a form of terrorism" and said people need to be mindful of "inflammatory rhetoric."

Anti-abortion activists, part of a group called the Center for Medical Progress, denounced the "barbaric killing spree in Colorado Springs by a violent madman" and offered prayers for the dead and wounded and for their families.

Cowart said the gunman "broke in" to the clinic Friday but didn't get past a locked door leading to the main part of the facility. She said there was no armed security when the shooting began.

He later surrendered to police after an hours-long standoff.

Nine other people were hospitalized, including five officers. Cowart said all 15 clinic employees survived and worked hard to make sure everyone else got into safe spaces and stayed quiet.

Neighbors who lived beside Dear's former South Carolina home say he hid food in the woods as if he was a survivalist and said he lived off selling prints of his uncle's paintings of Southern plantations and the Masters golf tournament.