Man walks into FBI office in Oregon and confesses to "ice-blooded murder" of Boston woman in 1979, prosecutors say

A 68-year-old man walked into an FBI field office in Oregon and confessed to bludgeoning a woman to death more than four decades ago in Boston's Back Bay neighborhood, prosecutors said.

John Michael Irmer, 68, was arraigned Monday in Boston. Irmer, who prosecutors say is also being looked at after allegedly confessing to another slaying, was ordered held without bail pending another court appearance on Oct. 17 on charges of first-degree murder and aggravated rape.

During his arraignment, Irmer stayed mostly hidden behind a wall in court, CBS Boston reported.