Is the abortion doctor killer a member of the Seventh-Day Adventist church?

As usual, our media fails to identify the affiliation behind this religiously motivated crime; however, Scott Roeder's ex-wife said, on Anderson Cooper, that Roeder was preparing to observe the Sabbath on a FRIDAY night. That is the norm in Judaism, but when it comes to Christianity, the main American group that does that is the Seventh-Day Adventists.