(CNN) -- Dr. George Tiller, whose Wichita, Kansas, women's clinic has been the target of anti-abortion protests for years, was shot and killed at his church Sunday morning, his attorneys said.

Laura Shaneyfelt, an attorney with the firm of Monnat and Spurrier, confirmed Tiller's death to CNN.

The 67-year-old doctor was one of the few U.S. physicians who still performed late-term abortions. He survived a 1993 shooting outside his clinic.

Wichita police said they were searching for a powder-blue Ford Taurus in connection with the killing, which took place outside Reformation Lutheran Church shortly after 10 a.m.

Police spokesman Gordon Bassham said witnesses provided a license number of the car the killer used to speed away from the church.

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