SK Group Chairman Chey Tae-won, left, and his then wife, Roh Soh-yeong attend a mediation session in their high-profile divorce settlement case at the Seoul High Court, Monday, in this composite photo. Joint Press Corps

SK Group Chairman Chey Tae-won and his former wife, Roh Soh-yeong, failed to reach an agreement in a court mediation session for the division of their assets Monday, putting the high-profile divorce settlement case back to trial proceedings.

The two sides had entered mediation for the asset division after the Supreme Court remanded the case to the Seoul High Court last October, while confirming the divorce.

They have remained far apart on whether Chey's SK stocks should be included in the division.

The Seoul High Court decided to end mediation and hold oral arguments on June 26, as the two sides apparently failed to narrow differences.