How do you remove someone as the attorney-in-fact under a Power of Attorney when the grantor is mentally ill?

Generally:
A general POA would expire when the principal became incapacitated. If there is a durable POA that was executed when the principal was competent then someone must petition the court to be appointed the guardian. A court appointed guardianship would extinguish a durable POA.
Generally:
A general POA would expire when the principal became incapacitated. If there is a durable POA that was executed when the principal was competent then someone must petition the court to be appointed the guardian. A court appointed guardianship would extinguish a durable POA.