We lost all contact with my father in the UAE for almost a year, how to know his whereabouts?

I'm A. M. s/o M. H., my father was in the UAE Airforce, and on 2 August 2021, he didn't come back to his flat.

We are living in Pakistan and on asking his flatmate and colleague about his whereabouts, we found that he is flying.

After three days of going missing, he called us and told us that he is under some investigation because of some confusion and it will be over in a few days but till now it's not over and we do not know about his case and where he is.

We have contacted the embassy and foreign office also but did not get any positive response.

Our whole family is suffering from this situation kindly help us out or guide us on what to do.