World | Muhammad Saif-Ur-Rehman Khan Pakistani Caught With Explosives at US Embassy in Chile Muhammad Saif-Ur-Rehman Khan arrested in Santiago By Jane Yager Posted May 12, 2010 4:33 AM CDT Copied Police leave the residence of Mohammed Saif Ur Rehman Khan in downtown Santiago, late Monday, May 10, 2010. (AP Photo/Felipe Fredes, La Tercera) A Pakistani man summoned to the US Embassy in Chile turned up Monday with traces of explosives on his documents and is now being detained by Chilean police. Muhammad Saif-Ur-Rehman Khan, 28, had entered Chile from the US on a 90-day tourist visa and was called to the embassy when it decided to revoke his visa to return to the US. “During the routine visitor screening process, we uncovered evidence of explosives and as a result we contacted Chilean authorities and they escorted him off the premises,” the US Ambassador to Chile told Bloomberg. The State Department said it isn't aware of any link between Khan and attempted New York City bomber Faisal Shahzad; American and Chilean authorities are each currently investigating the matter. Read These Next Country star cancels rest of his tour: 'I am mentally unwell.' Report finds uninjured cop took an ambulance as a dying man waited. One critical island in Iran has remained unscathed in airstrikes. Second 'Doomsday Plane' in 2 months is seen over California. Report an error