The main suspect of the shooting death of a woman at Bariloche's Cathedral remained in intensive care on Sunday night, after a failed suicide attempt.
Mariano Cordi was captured by police in a forest area near Bariloche with a bullet lodged in his cranium, police reported.
Cordi allegedly shot dead his ex girlfriend Valeria Coppa in Bariloche on Tuesday. Police found him 300 metres from Carbón mountain, after several days on the run.
Personnel at the Ramón Carrillo hospital operated on Cordi to remove a bullet from his head, which had caused significant swelling. They also treated him for dehydration, authorities reported.
"We removed a part of his cranium to decompress his brain, which was showing significant signs of inflammation and bleeding", the hospital's director Dr Leonardo Gil told the Noticias Argentinas news agency.
Cordi remained in intensive care on Sunday evening.
He is accused of killing Coppa, his ex girlfriend, on Tuesday, when the pair met at Bariloche's iconic Cathedral.
Authorities believe Cordi was obsessed with his alleged victim, who had ended their relationship four months ago.
The Coppa family thanked "the San Carlos de Bariloche community for the moral and spiritual support we have received since this sad incident which we are dealing with, having lost our daughter and the mother of our grandchildren Valeria".