Prosecutors questioned an executive of Samsung Electronics Co.'s after-service affiliate Tuesday over allegations that his company carried out an organized scheme to disrupt labor union activities among workers.

The Seoul Central District Prosecutors' Office grilled Choi Pyeong-seok, a senior executive at Samsung Electronics Service in charge of the human resources division, the office said. 

The 56-year-old is suspected of leading a scheme to sabotage the establishment of the labor union. 

Prosecutors believe Choi instructed his firm's subcontractors to disrupt the labor union and to regularly report to him about the progress.

He is also suspected of carrying out an internal inspection of employees who engaged in union activities and even of providing cash or other valuables to buy off workers to cut their ties with the labor union.

Prosecutors have been questioning company officials to find out if the alleged sabotage by the Samsung affiliate were handled by those in higher positions in the tech giant, possibly including Samsung Electronics' leadership or Samsung Group's now-disbanded control tower.(Yonhap)