Park has been engulfed by a scandal that centres on Choi Soon-Sil, who is accused of using her personal ties with the president to coerce local firms to donate millions of dollars to non-profit foundations Choi then used for personal gain.
Choi, 60, is also accused of interfering in state affairs to the extent of nominating officials and editing Park's speeches even though she has no official title or security clearance.
They also allegedly reported state affairs or leaked confidential documents to her.
TV news footage showed the pair separately entering the Seoul prosecutors' office this morning as they were mobbed by reporters.
The two, who served as Park's aides for decades, were described by local media as "doorknobs" to the president who wielded enormous power over policymaking.
Two other presidential aides have been arrested in the snowballing influence-peddling scandal.
Choi, whose father was an elusive religious figure and a longtime mentor to Park until his death in 1994, was arrested earlier this month for abuse of power and fraud.
A mass rally held in Seoul on Saturday drew one million people, according to organisers, making it the largest public protest in the South for nearly three decades.
Park also faces allegations that she helped Choi extract money from local companies including Samsung and Hyundai. Prosecutors are seeking to formally question her this week.
If she agrees, Park will become the first South Korean president to be probed while in office.
Under South Korea's constitution, the incumbent president may not be charged with a criminal offence except insurrection or treason.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
