That is the definition of reasonable, reasonable is having a witness and having probable cause and specifically knowing what has been done, that is wrong and against the law, that you're searching for, not just "oh.. we say we're being reasonable"
Ésta es la definición de 'razonable': Razonable es tener un testigo y una 'causa probable', sabiendo especificadamente que es que se ha hecho mal y contra la ley por lo cual se hará la investigación, no simplemente: "Oh... decimos que estamos siendo razonables.".