Juan Miguel Isla was found in a well in Manzanares last March eight months after his disappearance. His brother, Francisco, has confessed that Antonio Caba gave him a gun a day after the disappearance of his brother to keep it.
The Isla brothers had been at odds for years after the death of their father and the division of the family inheritance. Investigators are now working to determine if the gun that Francisco Isla is keeping is related to the crime since it has not yet been determined how exactly Isla died.