Late-term abortion doctor George Tiller was shot and killed as he entered his church Sunday morning in Wichita, Kan.
Police have arrested a suspect who is being held about 170 miles from Wicita, Kan. Johnson County sheriff's spokesman Tom Erickson identified the detained man as 51-year-old Scott Roeder.
Police spokesman Gordon Bassham said shots were fired just after 10 a.m. as Tiller entered the Reformation Lutheran Church lobby. The gunman fled the scene in a vehicle registered in a different state, according to the Associated Press. No motive has been confirmed.
Click the player to see footage of the scene at Reformation Lutheran Church after Tiller's shooting.
Stay with CBNNews.com for more on this developing story. Also, be sure to watch CBN Newschannel Monday morning for the latest developments.
Tiller, 67, was among the few U.S. physicians performing late-term abortions. In March, he was acquitted of 19 misdemeanor charges that he performed abortions illegally and did not obtain a second opinion on late-term abortions.
Pro-life leader Rev. Patrick J. Mahoney quickly condemned the shooting. Mahoney, former national spokesperson for Operation Rescue, led two weeks of prayer vigils during Tiller's recent trial.
"We unequivocally condemn the loss of George Tiller," Mahoney told CBN News. "We hope and pray that the Obama administration does not use this tragedy to paint the pro-life community negatively and as a pre-text for political gain."
Tiller's widow, four children and 10 grandchildren described the killing as "an unspeakable tragedy," in a statement. "This is particularly heart-wrenching because George was shot down in his house of worship, a place of peace."
Adam Watkins, 20, said he heard a small pop at the start of the service.
"We just thought a child had come in with a balloon and it had popped, had gone up and hit the ceiling and popped," Watkins said.
"We were just really shocked," he said. "We were kind of dumbfounded. We couldn't really believe it had happened."
Operation Rescue leaders condemned the shooting, saying they have "worked for years through peaceful, legal means, and through the proper channels to see him brought to justice."
"We pray for Mr. Tiller's family that they will find comfort and healing that can only be found in Jesus Christ," they said.
National pro-life leaders will hold a news conference in front of the U.S. Supreme Court, Monday morning in response to the killing.
Sources: The Associated Press, ABC News