Washington, Sep 24 (DPA) A federal court in New York has indicted an Afghan man on charges of conspiring to use weapons of mass destruction in the US, the Justice Department said Thursday.

Najibullah Zazi, 24, a legal permanent US resident of Afghan origin, was arrested Saturday along with his father and an acquaintance for making false statements to investigators in a matter involving international and domestic terrorism.

The arrests of Zazi, his father Mohammed, 53, and Ahmad Wais Afzali, 37, took place after federal agents conducted raids in Colorado and New York over a possible plot to detonate bombs on public transportation targets.

According to officials, Zazi admitted to attending an Al Qaeda facility in the Federally Administered Tribal Areas (FATA) of Pakistan last year, where he received training in the use of weapons and explosives.

Court documents say that he came to New York last week with a computer that contained instructions on bomb assembly and then later lied about the origins of the instructions.