Scott Roeder, under arrest for the murder of Dr. George Tiller, has told the Associated Press that there are “similar events planned around the country.”

WICHITA, Kan. (AP) — The man charged with murdering a high-profile abortion doctor claimed from his jail cell Sunday that similar violence was planned around the nation for as long as the procedure remained legal, a threat that comes days after a federal investigation launched into his possible accomplices.

A Justice Department spokesman said the threat was being taken seriously and additional protection had been ordered for abortion clinics last week. But a leader of the anti-abortion movement derided the accused shooter as “a fruit and a lunatic.”

Scott Roeder called The Associated Press from the Sedgwick County jail, where he’s being held on charges of first-degree murder and aggravated assault in the shooting of Dr. George Tiller one week ago.

“I know there are many other similar events planned around the country as long as abortion remains legal,” Roeder said. He would not elaborate.