From Goodyear, Ariz.: A family reports that a 92-year-old man had been exhibiting dementia symptoms before his arrest. He faces charges including second-degree murder. The man's wife, 89, was found dead with signs of an attack.

The suspect was taken into custody after being medically cleared. His adult son had traveled to check on him and discovered the body.

Further information about the incident is available from the source, including details about the investigation and the suspect's arrest.