The SEC would certainly not allow for PRs to be put out and lawsuits to be filed while a company is under investigation and would have called a halt to trading if these real or imagined misdeeds were blatantly true.
What?? The SEC has no control over what the company says or does. Every company has the right to put out product-related PRs in any circumstances. As to lawsuits, I know of one company that brought suit AGAINST THE SEC while they were being investigated. Needless to say, that didn't work out very well; it was quickly dismissed.
And I and others were sued, again unsuccessfully, by AZNT while the company was under formal investigation.