Dubai, United Arab Emirates ? A statement attributed to al-Qaida threatened more attacks in New York and Washington unless America stops supporting Israel and converts to Islam, an Arab TV reporter who received the unsigned document said Saturday.

Yosri Fouda, correspondent for the satellite station Al-Jazeera, told The Associated Press he received the six-page document on Wednesday. That was a day after the TV station broadcast an audiotape purportedly made by Osama bin Laden.

Fouda, who is known for good contacts within al-Qaida, would only say that the statement came from his sources with the group. But he insisted he was certain it came from the terrorist movement’s leadership.

Fouda, speaking by telephone from London, said the statement called on Americans to stop supporting Israel and other governments that “oppress” Muslims or face more attacks. The statement also called on Americans to convert to Islam, he said.

Fouda quoted the statement as: “Stop your support for Israel against the Palestinians, for Russians against the Chechens … for corrupt leaders in our countries … leave us alone or expect us in Washington and New York.”

He added the statement demanded U.S. troops leave the Arabian Peninsula, and justified the killings of American civilians because they pay taxes that finance military operations.

There was no immediate reaction from Washington.