WICHITA, Kan. — A man charged with shooting a prominent Kansas doctor who performed late-term abortions has been advocating through mailings from his jail cell that such killings are justifiable and communicating with individuals on the fringes of the anti-abortion movement, weeks after suggesting others might be planning similar attacks.

Scott Roeder, 51, is charged with first-degree murder and aggravated assault in the May 31 death of Dr. George Tiller — an attack that reignited the national debate over late-term abortion and gave Roeder icon status among extremists in the anti-abortion movement.

From his cell in Sedgwick County jail, Roeder has been sending anti-abortion pamphlets that laud Paul Hill, who was convicted of murdering an abortion provider in 1994, as an "American hero," and include examples of Hill's writings about how the killing of abortion providers is justifiable.

Hill was executed in 2003 for killing Dr. John Bayard Britton and his bodyguard outside a Pensacola, Fla., abortion clinic.

Roeder has also been corresponding with Rev. Donald Spitz — whose Army of God group's Web site celebrates Hill and who says he sent Roeder seven of the pamphlets at Roeder's request — and Linda Wolfe, an Oregon activist who has been jailed about 50 times for anti-abortion activities and who is close friends with a woman convicted of shooting Tiller in the arms in 1993. She says Roeder mailed her one of the pamphlets.

No one has accused Roeder of breaking any laws because of his jailhouse correspondence. But local and federal law enforcement agencies took seriously a threat Roeder made during a June 7 interview with The Associated Press that there are "many other similar events planned around the country as long as abortion remains legal." A judge raised Roeder's bond to $20 million, citing his comment to the AP, after a prosecutor argued Roeder's ability to get his message widely disseminated should lead a reasonable person to believe he is engaged in "alleged acts of American terrorism."

FBI and Justice Department officials declined to comment about whether they were concerned about Roeder's jailhouse contacts. The Sedgwick County public defender's office, which is representing Roeder, did not immediately respond to a message seeking comment. And the Sedgwick County District Attorney's office declined to speak about the matter.

Sedgwick County Sheriff Robert Hinshaw said he has assigned a trusted person to read all of Roeder's incoming and outgoing mail. He said Roeder has received about 100 letters.