On 10 May 2007, Lee officially declared his intention to seek the nomination of the Grand National Party (GNP) as its presidential candidate. On 20 August 2007, he defeated Park Geun-hye in the GNP's primary to become the party's nominee for the 2007 Presidential election. During the primary, Lee was accused of profiting from illegal speculation on land owned in Dogok-dong, an expensive neighborhood in Seoul. However, in August 2007, the prosecutors said in the interim announcement, "We do suspect Lee's brother's claim over the land in Dogok-dong, but have failed to verify the real owner of the asset." On 28 September 2007, the prosecutory authority officially dropped the suspicion that the Dogok land was under a borrowed name, announcing, "We have done all necessary investigations, including tracing the proceeds from the sale of the land and call history, and now got to the bottom of this case." In December 2007, a few days before the presidential election, Lee announced that he would donate all of his assets to society.
