Growth in the US economy falls back in first quarter
US economic growth slowed to an annualised pace of 2.2% in the first quarter of the year, from 3% in the final three months of last year.
The figure was below economists' estimates of 2.5% and is equivalent to quarter-on-quarter growth of 0.5%.
The US Commerce Department said businesses had cut back on investment, depressing gross domestic product (GDP).
However, a pick-up in the car market supported the growth figure.
Although the headline figure was weaker than had been hoped for, a key driving force in the fourth quarter had been stockpiling by US firms.
This time, demand from consumers was stronger.
Consumer spending, which accounts for about 70% of the US economy, grew by a 2.9% annual rate, the fastest pace since the fourth quarter of 2010.
Motor vehicle sales rose at 2.1% in the fourth quarter, the fastest rate in four years.
Home construction rose at its fastest pace since the second quarter of 2010, boosted by the warmer weather.
There was worse news on business spending, which fell for the first time since the fourth quarter of 2009 and government spending, particularly defence spending, fell back too.
It dropped by 2.1%, a sharp about turn from growth of 5.2% in the fourth quarter.
Investment in equipment and software rose at its slowest pace since the recession ended.
Paul Ashworth, chief UK economist at Capital Economics, said he thought the main reason for the lower-than-expected figure was the fall in defence spending: "We aren't too concerned because the undershoot compared with the 2.5% consensus forecast was largely explained by an unexpected second consecutive quarterly slump in defence spending.
Defence spending fell by 8.1% annualised, after dropping by 12.1% in the fourth quarter of last year."
Camilla Sutton, chief currency strategist at Scotia Capital, said there was good and bad in the numbers: "Personal consumption was positive. But overall [the figure was] weaker-than-expected GDP.
"It does open the door for the Fed to remain dovish."
The US central bank, the Federal Reserve, said this week it was happy with its current policy, although there is speculation that the bank may undertake a third round of quantitative easing, referred to as QE3.