He unintentionally disrupted emergency communications in the course of intentionally disrupting ordinary people's communications.
I doubt he ever thought "I've got a good idea, I'll disrupt emergency communications".
He did a thing, on purpose, that had a side-effect of disrupting emergency communications. I don't know whether you'd say that qualifies as "intentional".
If it qualifies as intentional, are we saying that all possible unintended consequences are de facto intentions? Or only in this case?