Can Permanent Deacons be removed?

Can a ordained permanent deacon be removed for illegal behavior i.e. stealing, adultery etc.?

Yes.

National Directory for for the Formation, Ministry, and Life of Permanent Deacons in the United States:

Withdrawal of Diaconal Faculties

  1. Bishops are reminded that if the ministry of a permanent deacon
    becomes ineffective or even harmful due to some personal difficulties or
    irresponsible behavior, his ministerial assignment and faculties are to
    be withdrawn by the diocesan bishop in accord with Canon Law.
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