The New Zealand dollar touched a fresh five-year low overnight as commodity prices fell on concern about waning demand.
The kiwi touched 66.19 US cents, and was trading at 66.52 cents at 8am in Wellington, from 66.61 cents at 5pm yesterday. The trade-weighted index was at 70.34 from 70.29 yesterday.
US, German, UK and Japanese long-term bond yields fell overnight as investors fret over global growth prospects and commodity prices fell, Bancorp Treasury Services said in a note.
Concern about growth is fuelled by the potential implications of a Greek default and euro exit and persistent falls in Chinese equities markets.
The rush into bonds overnight coincided with declining prices for oil, iron ore, aluminium, copper, gold and silver.