Is there something you should be reporting, even before there is an exchange of money?
Money is money... if the person took the actual bills from his paycheck account, would it be different money? We don't need to judge the actual currency; but is there a chance someone is being paid off for silence, favor, influence, or control?
I think it would be more pertinent if it were a believer at the center of the questionable activity.
You can balance your decision between the "meat sacrificed to idols" verses, and Mosaic Laws that maintained a societal judicial system. It depends on the situation.
Leviticus 19:11
`You shall not steal, nor deal falsely, nor lie to one another.
Isaiah 64:6
For all of us have become like one who is unclean, And all our righteous deeds are like a filthy garment; And all of us wither like a leaf, And our iniquities, like the wind, take us away.
Isaiah 28:8
For all the tables are full of filthy vomit, without a single clean place.
Ezekiel 33:25
"Therefore say to them, `Thus says the Lord GOD, "You eat meat with the blood in it, lift up your eyes to your idols as you shed blood. Should you then possess the land?
1 Corinthians 10:28
But if anyone says to you, "This is meat sacrificed to idols," do not eat it, for the sake of the one who informed you, and for conscience' sake;
Zechariah 3:4
"Remove the filthy garments from him." Again he said to him, "See, I have taken your iniquity away from you and will clothe you with festal robes."
Revelation 22:11
"Let the one who does wrong, still do wrong; and the one who is filthy, still be filthy; and let the one who is righteous, still practice righteousness; and the one who is holy, still keep himself holy."
I Cor. 10
All things are lawful, but not all things are profitable. All things are lawful, but not all things edify...Eat anything that is sold in the meat market without asking questions for conscience' sake; 26FOR THE EARTH IS THE LORD'S, AND ALL IT CONTAINS.
Money is paper and metal, numbers on a page. The acts themselves are what need to be addressed.