U.S. Reviews Security After Letter Bombs

After the discovery of four letter bombs hidden in mail here, U.N. officials launched a full review Tuesday of security operations.

Although the world body was not the specific target of the bombs - addressed to the U.N. bureau of the Arabic language newspaper Al Hayat - the Monday incident exposed gaps in security here.

One official conceded privately that the United Nations was blessed with great luck in thwarting the letter bombs because the suspect envelopes were uniform and easy to spot and because previous bombings of Al Hayat offices in Washington and London warned officers here to be on alert.