Wellington - New Zealand's inflation rate, boosted by soaring petrol prices, hit an 18-year high of 5.1 per cent in the 12 months ending September 30, official figures revealed Tuesday.

The consumers price index rose 1.5 per cent in the September quarter, Statistics New Zealand said.

The figures came as no surprise to analysts, who said that the inflation rate was likely to have peaked with consumer prices for fuel and food already beginning to ease.

Washington - International Monetary Fund (IMF) chief Dominique Strauss-Kahn has reportedly apologized to staff over an improper affair with a married subordinate.

Meanwhile, the IMF on Monday said an inquiry into whether he abused his position will be completed by the end of the month.

Strauss-Kahn met Friday with the IMF's executive board, which has the power to dismiss him, and has been "fully supportive" of the investigation, according to a statement from Shakour Shaalan, who leads the 24-member board.