The main issue that people have identified (as a possible cause) is the comment about "due diligence, expect a result later this month" (my quote isn't verbatim). The issue being, if that's the case and the market hasn't been informed, a paid ad has delivered information which wasn't announced officially.
AVZ
Price at posting:
23.0¢ Sentiment: Hold Disclosure: Held
A personalised tool to help users track selected stocks. Delivering real-time notifications on price updates, announcements, and performance stats on each to help make informed investment decisions.