An Afghan-born Colorado resident may have plotted an attack on New York commuter¹ trains for this month's 9/11 anniversary, a US prosecutor² has said.

一位美国检察官称，一名阿富汗出生的克罗拉多居民可能策划了今年911纪念日纽约市郊列车的袭击。

Najibullah Zazi has said he is not involved in terrorism

The suspect, Najibullah Zazi, is accused of receiving explosives training in Pakistan and buying large quantities of bomb-making chemicals.

A judge has ordered that he be moved to New York to face charges of conspiracy³ to use weapons of mass destruction.

Since his arrest, Mr Zazi has publicly denied being a terrorist.

Mr Zazi, 24, has been ordered to be held without bail⁴ pending⁵ his transfer from Denver to New York.

Prosecutor Tim Neff told the Denver judge who approved the transfer that Mr Zazi "was in the throes（剧痛，阵痛） of making a bomb and attempting to perfect his formulation".

"The evidence suggests a chilling（使人寒心的，使人恐惧的）, disturbing sequence of events showing the defendant⁶ was intent on making a bomb and being in New York on 9/11, for purposes of perhaps using such items," he was quoted as saying by the Associated Press news agency.

Nail polish remover

Mr Neff said the suspect had driven to New York on 9 September before suddenly returning to Denver.

Prosecutors⁷ say he returned after learning that he was being watched by federal agents.

According to an indictment⁸（起诉，控告） by the New York federal grand jury, Mr Zazi brought "unusually large" quantities of hydrogen peroxide（过氧化氢） and nail polish remover from beauty shops to make bombs, possibly for detonation⁹（爆炸） on New York commuter trains.

A government motion seeking to deny Mr Zazi bail said he had travelled to Pakistan in August 2008 where he received explosives training, AP reported.

On his return early this year he used a computer to research homemade bomb ingredients（作料，材料）, the motion said.

Mr Zazi and his father, Mohammed, were arrested last Saturday in Denver on charges of lying to FBI agents investigating the case.

A third man, 37-year-old imam Ahmad Wais Afzali, was arrested in Queens, New York.

All three have denied any involvement in the alleged¹⁰ plot.

Mohammed Zazi has been ordered to be freed under court supervision¹¹, while Mr Afzali has been released on bail.