May 22, 2008: Swiss bank UBS, one of the worst affected by the credit crunch, launches a $15.5bn rights issue to cover some of the $37bn it lost on assets linked to US mortgage debt.
Sensex fell 336 points on May 23.
June 19, 2008: The FBI arrests 406 people, including brokers and housing developers, as part of a crackdown on alleged mortgage frauds worth $1 billion.
Separately, two former Bear Stearns workers faced criminal charges related to the collapse of two hedge funds linked to sub-prime mortgages. It is alleged they knew of the funds' problems but did not disclose them to investors, who lost a total of $1.4 billion.
Sensex ends down 278 points on June 23.
July 13, 2008: US mortgage lender IndyMac collapsed -- the second-biggest bank in US history to fail.
On July 14, the Sensex finally ended with a loss of 139 points at 13,331.
Image: Ralph Cioffi and his wife walk out of a Brooklyn court house. Cioffi and Matthew Tannin were arrested n New Jersey and Manhattan and had been indicted for conspiracy to commit securities fraud and mail fraud and could face up to 20 years in prison | Photograph: Spencer Platt/Getty Images
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