SEOUL – Prosecutors have questioned three officials linked to South Korea’s third-largest conglomerate, SK Group, as part of a widening corruption scandal that led to the dismissal of President Park Geun-hye.

The Constitutional Court dismissed Park on Friday last week when it upheld a December parliamentary impeachment vote.

An election for a successor will be held on May 9.

Park, South Korea’s first democratically elected president to be removed from office, has been accused of colluding with a friend, Choi Soon-sil, to pressure big businesses to contribute to non-profit foundations backing the president’s initiatives.

Both denied wrongdoing.

The Samsung Group, South Korea’s largest conglomerate, is already embroiled in the scandal and its head, Jay Y. Lee, is in jail on trial of bribery, embezzlement and other charges.

Lee denies all charges and Samsung denies wrongdoing.

A spokesman for the Lotte Group said on Wednesday it was cooperating with the prosecutors’ investigation.

The three officials linked to the SK group include Kim Chang-geun, the former chairman of the semiconductor-to-telecom group’s top decision-making committee, an SK Group spokesman confirmed.

“We will actively straighten out suspicions that are different from facts,” the spokesman said.

Park has been summoned for questioning next Tuesday.

– Reuters