Which preposition to use with informers

against Occurrences 6%

I do not care to turn informer against my comrades.

of Occurrences 4%

Out of any hundred outlaws in the records of a hundred years, some ninety-nine had come to grief through the increasing numbers of their following and lack of discipline; he could think of a dozen who had been betrayed by paid informers of the government, posing as friendly brigands.

in Occurrences 3%

The answer is direct and simple: Every individual Social Democratand men, women, and children, they number some twenty millionshas for years past been a spy and informer in the interests of the Umsturzpartei (overthrow-party).

by Occurrences 3%

"We commend this letter to you as a sure proof that we ourselves are to be trusted, since, if it should fall into the hands of an informer by the way, our lives undoubtedly would pay the forfeit.

on Occurrences 2%

In order, if possible, to lessen this hostility, they frequently became informers on others engaged in the same traffic.

as Occurrences 2%

"Hall returned in half an hour with the father in his custody, and produced a great quantity of black silk handkerchiefs, which he had found on the premises; but the desk, which had been spoken of by his informers as containing stolen property, he had found quite empty.

for Occurrences 2%

He had 'not seen the informer for six weeks, except the last evening, when he brought a hack load of negroes to the tavern where he and his partner were lodgers.' "'Were two boys among the number?' "'Yes.' "'Were they gagged?' "'Yes.'

from Occurrences 1%

Every member of society feels and acknowledges the necessity of detecting crimes, yet scarce any degree of virtue or reputation is able to secure an informer from publick hatred.

at Occurrences 1%

Just outside Limerick, in the town of Ennis in the county of ClareClare as well as Kerry has the reputation of shooting down informers at sightthere dwells the most loved bishop in Ireland.

Which preposition to use with  informers