While I don't doubt your discovery that a suit and jacket were missing from your checked baggage, I'm having trouble envisioning a ring of, band of, or individual baggage thieves going to the trouble to loot luggage for suits and jackets (other than mink, other fur or fancified leather).

The last suit I had "stolen" from my bag turned out to have been left on a hanger in a hotel closet, the last jacket, left in a cab. That was long ago, when I was busier and more easily forgetful due to stress.

I'm not saying your gear wasn't "stolen", just implying that (a) things are not always what they seem, and (b) the coincidental nature of the claims lowers my credibility meter's readout.