My brother in laws urn has been placed in my Dad's grave without the concent of us three sons. with a phony codicil.

My brother Charles Cook is co executive of the will and was never notified by the other co executive Celeste Cacioppo of Springfield of any codicils added to the will. The codicil in question signed by my Mom Oct. 2011 should be null and void as my brother Charles was never notified and my Mom at age 96 was suffering from dementia . A Notary who is a friend of my sister Celeste signed this codicil at the Cacioppo home with no regard to the three sons. Saturday at 10:00 am 8 July 2017 my brother in laws urn was placed in my Dad's grave. We the sons are against this.