(CNN) -- Syrian opposition leader Moaz al-Khatib tried to resign Sunday, but was told he couldn't. Al-Khatib will remain as head of the Syrian National Coalition until the group's next general meeting, Sanir Ahmed, Syrian National Coalition spokesman, told CNN. The executive committee rejected the resignation. He "has taken the realm of the national coalition at a critical stage and he was able to garner great popularity and establish unity among ranks of the opposition. So he is to remain in his position for now," Ahmed said. No date for the meeting has been set. Earlier, al-Khatib announced his resignation in a written statement, and accused world powers of using the Syrian crisis to advance their own interests.
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NEW: Opposition leader in Syria wanted to resign but alliance rejected his request
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NEW: Interim Syrian opposition alliance leader Ghassan Hitto meets with rebels in Aleppo
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NEW: Israeli president says Syrian leader turned out to be a phony
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Israel says its troops came under fire Sunday from Syrian side
"We will not allow the Syrian army or any other factor to violate @placeholder's sovereignty by firing into our territory."
IDF said no casualties or damage had been reported on the @placeholder side of the border, but it was continuing to monitor the situation in the border area.