When anyone says there's not enough info to determine it was terrorism, and then immediately follows that with "it was probably a suicide", you know something's up. If there isn't enough info to determine it was terrorism, there isn't enough info to determine anything else, either. An honest response would be to say it's too early to make any determination.
why would they not want people aware if it is terrorism? I would think the basis of the alert system should be in play