TECUMSEH, Neb. (AP) — A three-judge panel has sentenced to death a Nebraska prisoner who killed his cellmate.

District Judge Vicky Johnson of Wilber, the presiding judge, announced the panel’s decision Friday in the murder case against 40-year-old Patrick Schroeder.

Schroeder has freely admitted strangling 22-year-old Terry Berry in April 2017 in their cell at Tecumseh State Prison in southeast Nebraska. Schroeder told investigators that he killed Berry for being too talkative and said he had warned Berry several times that he needed to “shut up.”

Schroeder offered no rebuttal to prosecutors’ assertions that he should be sentenced to death. He’s said he believes in the death penalty.

At the time of Berry’s killing, Schroeder was already serving a life sentence for killing a 75-year-old Pawnee City farmer in 2006.