(CNN)[Breaking news alert, posted at 8:30 p.m. ET Friday]
A police officer shot during Friday's siege at a Planned Parenthood clinic in Colorado Springs has died, the Colorado Fraternal Order of Police said on Twitter.

Updated at 8:34 p.m.:
At least 11 people, including five police officers, were injured when a gunman attacked a Planned Parenthood clinic in Colorado on Friday. Officials noted the number could rise as they secure and process the crime scene, while the Colorado Attorney General's office tweeted that there was a "tragic loss of life." Police captured the suspected gunman at 4:52 p.m. local time; his identity remains unknown.

The Colorado Springs clinic is not the first Planned Parenthood facility to come under attack this year. On October 1, an unknown arsonist threw an ignited container of gasoline inside one of the organization's centers in Southern California. The Southern Poverty Law Center identified three similar incidents at Planned Parenthood facilities in Illinois, Louisiana, and Washington in recent months. In September, the FBI warned law-enforcement agencies throughout the country about "lone offenders using tactics of arsons and threats all of which are typical of the pro-life extremist movement."

NB: The "pro-life extremest movement" is overwhelmingly comprised of those who claim to be Christians.