A surge in the Producer Price Index signals that businesses are paying more for goods and services, which could push up consumer costs.

Inflation has surged to its highest level in more than three years since the U.S. and Israel launched their war on Iran, triggering a surge in gasoline prices.

The Consumer Price Index rose last month at a 4.2% annual rate amid a spike in U.S. energy prices.

Economists have been closely examining economic reports given the ongoing war with Iran and concerns about higher overall inflation.