Technical charts won't identify the culprit at hand. If you resort to technical charts, you'll be utterly confused and might be tempted to sell. Instead just watch level 2 data and analyze individual transactions -- either through a waterfall ticker (as illustrated below), or a tick-by-tick module provided by a reputable stock tracking provider.
You don't have to be a genius, to realize that the price-per-share is heavily being manipulated, with the sole intent to lower it. I've watched numerous times -- a group of individuals peter panning, small lot transactions between themselves -- hoping a sucker would see the declining price-per-share and sell. Of course, a sucker is commonly found, and as a result causes the price-per-share to plummet even more once the faux pas orders are removed.