'Flash Crash' Accused: I'm Just A Good Trader

A British man whose stock market trading allegedly helped lead to a multibillion-dollar crash on Wall Street has claimed he was just good at his job.

Navinder Singh Sarao is fighting extradition to the US, where he is wanted in connection with the "Flash Crash" in 2010.

At Westminster Magistrates' Court he was remanded in custody after failing to have a £5m security removed from the conditions of his bail.

The 36-year-old was led away from the dock, shouting to the public gallery: "I haven't done anything wrong apart from being good at my job. How is this allowed to go on, man?"

Sarao faces 22 charges in the US, including wire fraud, commodities fraud and market manipulation, which is said to have been carried out from his parents' home in Hounslow, west London.

The alleged offences carry sentences totalling 380 years.

The US Justice Department claims he made £26m illegally in five years.

Sarao's assets have been frozen since his arrest - something his lawyers told the court they did not know about when bail terms were set last month.

In addition to the £5m needed to secure bail, conditions include his parents providing £50,000.

However, James Lewis, QC, defending, told the court it was "now impossible to supply" the £5m.

District Judge Elizabeth Roscoe ruled the terms should not be altered, adding: "Bearing in mind the nature of the allegations made - not just the amount but the manner of them as well - I am not of the opinion that £50,000 together with the other conditions would be sufficient to secure your attendance in court."

After her ruling, Mr Lewis told the Ms Roscoe: "We'll just go to the High Court."

On 6 May 2010 Sarao allegedly made £587,879 in the space of 24 hours by using "dynamic layering" computer software to make fake trades.

That same day, the Dow Jones Industrial Average tumbled by several hundred points in a matter of minutes, before recovering many of the losses.

A review hearing in the case is listed for 26 May and a full extradition hearing is set for 24 September.