TEHRAN (AFP) - AFP reporter Farhad Pouladi remained in detention on Thursday after he was arrested while covering an anti-American rally in central Tehran a day earlier.

Officials at Iran's Ministry of Culture and Islamic Guidance, which coordinated foreign media coverage of the rally, said on Thursday they were continuing to track the case.

Pouladi was detained on Wednesday morning by three security personnel, two in uniform and one in plainclothes, witnesses said.

He was riding pillion on a motorcycle when he was stopped.

The rider of the motorcycle said the security force officials confiscated the reporter's mobile phone and then escorted him away.

The rally marked the anniversary of the November 4, 1979 storming of the US embassy in Tehran by Islamist students.