US prices rose in April at their fastest rate since May 2023 as the impact of the war in Iran was increasingly felt by consumers.

A jump in the cost of gasoline and groceries pushed the consumer price index (CPI), the amount prices jumped by in the past 12 months, to 3.8%.

It is the highest level since inflation hit 4% three years ago.

The Bureau of Labor Statistics (BLS) said almost half of the rise was driven by surging energy costs, while housing and food costs also contributed.