"We urge the Syrian authorities to be more transparent about the whereabouts of Dorothy Parvez and the circumstances of her detention."
Parvez, 39, holds American, Canadian and Iranian citizenship, and joined Al-Jazeera's English-language channel last year.
Al-Jazeera and other satellite channels have been accused in Syria of exaggerating anti-regime protests across the Arab world and of manufacturing images.
Coverage of demonstrations has been tightly controlled in Syria since the outbreak of anti-regime protests in mid-March.
Because few foreign journalists can get into Syria, international media rely heavily on video footage filmed and released by the protesters themselves on Internet sites such as YouTube.
The IPI said Parvez had not had time to get a Syrian visa, and was probably travelling on her Iranian passport.
Rights group Insan has said that three Egyptian, seven Lebanese and three European journalists and one Algerian colleague are being detained in Syria, most of them for entering without authorisation to work.
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Parvez, 39, holds American, Canadian and Iranian citizenship, and joined Al-Jazeera's English-language channel last year.
Al-Jazeera and other satellite channels have been accused in Syria of exaggerating anti-regime protests across the Arab world and of manufacturing images.
Coverage of demonstrations has been tightly controlled in Syria since the outbreak of anti-regime protests in mid-March.
Because few foreign journalists can get into Syria, international media rely heavily on video footage filmed and released by the protesters themselves on Internet sites such as YouTube.
The IPI said Parvez had not had time to get a Syrian visa, and was probably travelling on her Iranian passport.
Rights group Insan has said that three Egyptian, seven Lebanese and three European journalists and one Algerian colleague are being detained in Syria, most of them for entering without authorisation to work.
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