Of the 11 commodity groups, o­nly the price of posts and telecommunications services saw a month-on-month decline of 0.01 percent.

The sharpest price increase, 1.79 percent, was found in food and catering services, of which food surged the strongest - 2.47 percent.

The remaining 9 categories rose less than 1 percent.

The price of other goods and services group took the lead with 0.86 percent, followed by culture, entertainment and tourism (0.77 percent), beverage and tobacco (0.76 percent), household appliances (0.72 percent), and apparel-headwear-footwear (0.62 percent).

The rest, including the highest price increase groups in May - housing and construction materials, and transportation - rose less than 0.6 percent.

Not included in the basket of the consumer price index, the rise of gold price index continued to slow down, 0.36 percent compared to 1.43 percent in May, while the decreasing US dollar price index was down 0.78 percent compared to the 0.98 percent in May.

In terms of regions, the northeastern region saw highest price increase of 1.85 percent, followed by the Red River Delta and northern central region with 1.45 percent and 1.37 percent respectively.

In terms of locations, the northern Thai Nguyen Province saw the highest CPI increase of 2.17 percent, followed by coastal Hai Phong City (1.51 percent) and Hanoi (1.21 percent).

Vietnam has recently revised its inflation target in 2011 to 15 percent from 7 percent set at the beginning of this year.