By Daniel Hunter
The US Federal Reserve are split over its decision to keep interest rates at 0%, according to minutes of its latest meeting.
Some officials believe it would be best to raise rates in mid-2015, others prefer later in 2016.
Interest rates have been at 0% in the US since the financial crisis in 2008.
"Several participants judged that the economic data and outlook were likely to warrant beginning normalisation at the June meeting," the minutes read.
"However, others anticipated that the effects of energy price declines and the dollar's appreciation would continue to weigh on inflation in the near term, suggesting that conditions likely would not be appropriate to begin raising rates until later in the year, and a couple of participants suggested that the economic outlook likely would not call for liftoff until 2016."