(AP) — A 20-year-old man has pleaded guilty to first-degree murder in the rape and beating death of a 93-year-old Omaha woman in a deal that spared him the death penalty.

Sergio Martinez-Perez entered the plea Wednesday in Douglas County District Court and was immediately sentenced to life in prison.

Police say Perez broke into the south Omaha house Louise Sollowin had occupied for more than 70 years in July and raped and beat her. She died three days after the attack from her injuries. Prosecutors say Perez told investigators he attacked Sollowin because he was drunk and “angry with women.”

He was initially charged with first-degree murder, first-degree sexual assault, first-degree assault and burglary. Prosecutors had planned to seek the death penalty until his plea Wednesday.