alleged
/əˈlɛdʒd/
adjective
(of an incident or a person) said, without proof, to have taken place or to have a specified illegal or undesirable quality.
the alleged conspirators
supposed,so-called,claimed,professed,purported,ostensible,apparent,putative,unproven,rumoured,reputed,presumed,assumed,reported,declared,stated,avowed,described