I suspect that you mean CBP, not TSA and infer that this is all on arrival into the USA from Colombia.

That being the case, you got flagged for one reason or another. It could have been random, it could have been that the number of trips triggered some alarm and it could have been that your name is close to that of someone on a watch list or CBP had information that a person fitting your description was on your flight and was carrying drugs, other contraband or records of some crime. Perhaps you were flagged by Colombian authorities on departure. Perhaps, perhaps, perhaps.

Bottom line is that it's in the past. If it happens the next time, you will know that you are on a watch list. If it doesn't, it was anywhere from random to some other factor not present usually.