Edwin Valero was found hanged in his jail cell and died shortly afterward, a day after he was arrested on suspicion of murdering his wife, police in Venezuela say according to a Los Angeles Times report.

Valero reportedly was found by another inmate, who then informed authorities at the jail. Police said the fighter was still alive when he was discovered but died at about 1:30 a.m. Monday.

Viera Valero, his wife, reportedly was stabbed three times, after which police say Valero told a hotel security guard what he had done and was subsequently arrested on suspicion of murder.

Reuters reported: “At 5.30 in the morning (on Sunday), the boxer came down to reception and communicated to security staff what he had done inside the room,” police commissioner Wilmer Flores Trosel told reporters.

Valero, who knocked out all 27 of his opponents, was one of the most exciting boxers in the world but had a history of problems outside the ring.

In September, Valero, who has been treated for drug and alcohol addiction, was arrested for allegedly striking his mother and sister. The fighter and his mother later insisted that nothing happened.

Last month, he was arrested for allegedly harassing his wife and threatening a doctor and nurse at a hospital where she was treated for multiple injuries, including a punctured lung and broken ribs. Valero, whose attorney said she fell down a flight of stairs, agreed to rehab for his addictions and anger issues.