The unearthing of a mega scam on the bourses, perpetrated by rogue broker Ketan Parekh (KP) and several other major players, led to the tanking of the 'manipulated' stocks on Monday. Fearing a crackdown by market regulator Securities and Exchange Board of India (SEBI) following Mail Today's publication of the damning Intelligence Bureau (IB) findings on Saturday, panicky investors deserted the counters associated with KP and his associates.