SEOUL: South Korea's economy grew a seasonally adjusted 1.1 percent in the second quarter of 2013 from the previous three-month period, revised data from the central bank showed on Thursday, unchanged from its earlier estimate.

It was the quickest quarterly growth since a 1.3 percent rise posted during the January-March period of 2011 for Asia's fourth-largest economy and follows a 0.8 percent bump for the first quarter of this year.

Over a year earlier, the trade-dependent economy expanded by a revised 2.3 percent in the April-June quarter, Bank of Korea data showed, also the same as the central bank's earlier estimate published in late July.

The year-on-year growth was the highest since 2.4 percent expansion during the second quarter of 2012.