The man suspected of gunning down one of the few doctors to provide late-term abortions in the United States remained jailed Monday as the investigation continued, officials said.
"We will not be rushed" into bringing charges, Kansas district attorney Nola Foulston told reporters.
Scott Roeder, 51, was arrested about three hours after Dr George Tiller was shot to death in the foyer of his Wichita, Kansas church around 10:00 am (1500 GMT) Sunday.
Although Roeder has connections to anti-abortion groups, Foulston said law enforcement officials believe he was acting as "one individual."
Foulston said the case will be handled in state court, despite the assistance that federal agents are providing.
Asked if she believed it would qualify as a capital murder case, which carries a possible death penalty, Foulston said, "Everything will be reviewed."
President Barack Obama, who just two weeks ago sought an end to the "demonization" of opponents in the bitter culture war over abortion rights, said he was "shocked and outraged" by the killing of Tiller, 67.
Attorney General Eric Holder said federal authorities offered protection to "appropriate people and facilities" across the country after the shooting Sunday.
He called Tiller's murder "an abhorrent act of violence."
