Santiago: A Pakistani man being investigated in a terror probe after being detained at the US Embassy told The Associated Press on Wednesday that he thinks it all must be a mistake.

"Everything is so weird. I am still trying to think what happened," Mohammad Saif Ur Rahman Khan said in an interview in his public defender's office.

Khan, 28, repeated his denials that he has anything to do with terrorism, and said he can't figure out why Chilean police say they found traces of tetryl, a chemical used to boost the power of explosives, in his bag, on his cell phone and on clothing in his apartment.

Khan had been called to the US Embassy to be told his visa was revoked because of information received by the US government, the State Department has said.

Framed

But Khan said they never told him his visa was revoked, and he claimed a bomb-sniffing dog was so uninterested in his bag that it appeared to fall asleep.

Perhaps it's a case of mistaken identity or that he's being framed for reasons he doesn't understand, Khan said.

Khan has been freed three times by judges who ruled that the evidence is insufficient to justify holding him in Chile's maximum-security prison for terror suspects.

Prosecutors and the Interior Ministry asked judge Carolina Araya to apply Chile's tough anti-terror law — a legacy of the dictatorship of General Augusto Pinochet that allows for long detentions without court orders, tougher sentences and unidentified witnesses.