New York police are reviewing video from surveillance cameras in an attempt to identify shoppers who trampled to death a Wal-Mart worker after they ripped off doors and burst into the store in pursuit of reduced items.
Police say the shoppers physically broke down the doors, to get inside the store yesterday at around 5am yesterday.
Jdimytai Damour, 34, of Queens died during a stampede of around 2,000 shoppers at the store in Valley Stream, Long Island.
Other workers were trampled as they tried to rescue him.
The customers stepped over the dead man and became angry when told the store would be closing because of his death.
Police say a pregnant woman was taken to a hospital for observation.
Wal-Mart said the incident was 'unfortunate'.
Vice president for the Northeast, said in a statement. "Despite all of our precautions, this unfortunate event occurred.
"Our thoughts and prayers go out to the families."
In another incident two people were shot dead inside a Toys "R" Us in California. Shoppers at the store in Palm Desert ran for cover as two men shot and killed each other.
Shoppers around the United States line up early outside stores in the annual bargain-hunting day known as Black Friday.
It is known as this as it is usually a time when stores break into profitability for the year.