The governor, John Hickenlooper, spoke the morning after unnamed law enforcement authorities told that the suspected gunman had muttered 'no more baby parts' when he was arrested after an hours-long standoff at the Colorado Springs clinic.

Planned Parenthood provides a range of health services for men and women, including abortion.

The remark attributed to 57-year old Robert Lewis Dear appeared to be a reference to Planned Parenthood's abortion activities and its role in delivering fetal tissue to researchers, a hot button issue in the 2016 race for the presidency.

The shooting on Friday was believed to be the first deadly attack at an abortion provider in the United States in six years. The Colorado Springs center has been repeatedly targeted for protests by anti-abortion activists.

The reports could not be independently confirmed and authorities have steadfastly declined to discuss a possible motive for the attack, saying their investigation was still underway.

Planned Parenthood, however, suggested that the reports were  clear evidence of a motive.

Read more:

>>Police arrest suspect in Colorado clinic attack

>>Three killed, nine injured in attack on Colorado clinic

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