Which preposition to use with malversation

in Occurrences 4%

He chose the earls and sheriffs from among the men most celebrated for probity and knowledge: he punished severely all malversation in office [o]: and he removed all the earls, whom he found unequal to the trust [p]; allowing only some of the more elderly to serve by a deputy, till their death should make room for more worthy successors.

of Occurrences 3%

CHAPTER III THE PERFECT LOVER To the crime of being Potts the wretched Colonel had now added malversation of a trust fund.

at Occurrences 1%

This very soon proved insufficient; they were obliged to take supplies from the contractors on credit, and connived at their conduct because they needed them, till the scandalous malversation at last induced the aediles to make an example of some of the worst by impeaching them before the people.

Which preposition to use with  malversation