وتم ابلاغ مرجعه بعدم اخلاء طرفه
and and the contact person was informed that he was not cleared.

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Note added at 22 mins (2019-07-16 06:48:19 GMT)
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or :

and and the contact person was informed that he was not released of liability.

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Note added at 22 mins (2019-07-16 06:48:45 GMT)
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released of liability

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Note added at 58 mins (2019-07-16 07:24:54 GMT)
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@Asker:
in this case I would use ''not cleared' to mean ''عدم اخلاء طرفه''

example taken from 'arabdict':
Suspected and then cleared.مشتبه به ومن ثم تم إخلاء طرفي من الامر
https://www.arabdict.com/de/english-arabic/اخلاء طرفه

example taken from "Reverso"
مؤخرًا، كنتَ مشتبهًا به في..."سرقة ماسة "لا جوياو مشتبه به ومن ثم تم إخلاء طرفي من الامر
Recently, you were suspected in the la Joyau diamond heist... suspected and then cleared.

https://context.reverso.net/translation/arabic-english/عدم ا...