Breaking: Another abortion-related murder in Kansas?

The Wichita Eagle reports that authorities in Newton, Kansas, are investigating the “very suspicious” death of Richard Schroeder, a retired former U.S. marshal.
Schroeder’s wife discovered him lying in their driveway with head injuries this morning; he was later pronounced dead at a hospital.
According to the Eagle:
During his career as a U.S. marshal, Schroeder provided court-ordered protection for abortion provider George Tiller during 1991’s “Summer of Mercy” anti-abortion protests.
For a significant part of Schroeder’s career — first as a marshal and later as a private detective — he helped provide security for Tiller, a nationally known later-term abortion provider and perennial focus of anti-abortion protests and threats. Tiller was fatally shot at his Wichita church this summer.
Schroeder, who lived in Newton, also has operated a private investigation business in the Wichita area.
The full story is here.
Update (5:55 p.m.): Thanks to commenter The DLC for pointing out that the Eagle is now reporting that authorities say Schroeder died of natural causes. The link above now takes readers to the Eagle‘s updated story.