Today, officials cautioned about reading too much into the January numbers.

But officials cautioned against reading too much into the statistics.

But American officials cautioned that the deal was not finished.

Officials cautioned that in addition to the dead, at least 50 people were missing.

Officials cautioned that it was impossible to know how many people died.

The officials cautioned that the exercise, which has been expected for several days, could be called off at the last minute.

Some officials cautioned that the new evidence is far from definitive.

American officials cautioned that no final decision had been made about a shift in intelligence resources.

The officials cautioned that information about the search was being tightly held.

Officials cautioned against labeling the 12 schools the city's most dangerous.