China's real estate investment growth slowed in the first quarter of 2013, and some analysts expressed concern that rigorous property curbs may drag down economic growth.

Despite a year-on-year increase of 20.2 percent in real estate investment in the first quarter of 2013, the growth rate was down 3.3 percentage points compared with the same period last year and 2.6 percentage points lower than the first two months this year, the National Bureau of Statistics said on Monday.

Revenues from property sales in the country rose 61.3 percent, compared with a 77.6 percent rise in January and February combined, according to the bureau.