The New Zealand dollar fell 2 percent to its session low against the U.S. dollar on Tuesday on risk aversion as investors worried about the expiry of a key euro zone refinancing program this week.

The New Zealand dollar fell as low as US$0.6938 and last traded at US$0.6942, down 1.9 percent on the day NZD=D4 NZD=. (Reporting by Nick Olivari, Editing by Chizu Nomiyama)

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