Brad Delp, who committed suicide March 9, left a note proclaiming himself "A lonely soul."

Police say the 55-year-old lead singer for the rock band Boston paper-clipped the note to his shirt. He was found dead in his Atkinson, New Hampshire home, after committing suicide by carbon monoxide poisoning. In another note, Delp took sole responsibility for the act, and warned that the house contained carbon monoxide gas.

Police also found four sealed notes to Delp's fiancee Pamela Sullivan, his children, their mother, Micki Delp, and another couple whose identity was not disclosed.

Police say they will give the letters to family members without reading them. Brad Delp was cremated March 14, following a private funeral.