Retail prices of domestic and imported beef continued rising to new records last week amid the import ban on U.S. beef, the Agriculture, Forestry and Fisheries Ministry said Monday.

The average price of imported frozen beef rose to 364 yen per 100 grams in the Jan. 26-30 period, up 1.9 percent, or 7 yen, from the previous week, while the retail price of domestic beef rose 0.6 percent, or 4 yen, to 670 yen per 100 grams.

Both are the highest levels since the ministry began tracking weekly meat prices last August.