"The probability of an increase in the target range for the federal funds rate occurring at the May FOMC meeting, as implied by quotes on federal funds futures contracts, remained close to zero," the minutes stated. "The probability of an increase at the June FOMC meeting rose to about 90 percent by the end of the inter-meeting period."
The FOMC voted unanimously to leave the benchmark federal funds rate — the rate on overnight lending of excess reserves between banks and credit unions — unchanged at 1.5 to 1.75 percent, the minutes said.
Meeting participants also agreed that information received since the previous March meeting indicated that the US labor market had continued to strengthen and economic activity had risen at a moderate rate, according to the minutes.
An interest rate increase to the present level in March was the first under Chairman Jerome Powell, who succeeded Janet Yellen.