U.N. chief Ban Ki-moon reiterated his call on all Lebanese leaders to work without any further delay for the election of a new president and work for the nation's interest.

According to An Nahar daily published on Friday, Ban expressed his growing concern over the continued failure to elect a head of state in his semi-annual report on the implementation of U.N. Security Council Resolution 1559.

The report has not been published yet on the website of the U.N.

The presidential vacuum caused a more delicate situation in the country amid security, economic and humanitarian challenges, Ban said in the report prepared by Norwegian diplomat Terje Roed-Larsen.

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