Transcript
Professor Tark says Grace Road has been scrutinised by South Korea's Christian circles for some years, and in 2014 it was isolated as a heresy group.
But why Fiji?
According to Grace Road's website, after scouting 60 countries, they landed in Fiji with its warm climes and fertile soil, a sign that this was the prophecised land.
Professor Tark says there's other explanations, too.
In 2014, Grace Road leased a plot of land in Navua, south of Suva, apparently with the support of the Ministry of Agriculture.
Since then, it has created something of a small business empire, with a range of stores, salons and food outlets.
But in 2016, the Methodist Church -- the country's largest denomination -- put out a statement warning members to be weary about Grace Road, labelling it a cult.
A spokesperson for the church, Wilfred Regunamada, says news of Ms Shin's arrest came as no suprise.
Grace Road also maintained connections with the highest levels of Fiji's Government.
Openings have been attended by ministers, who have spoken effusively about its investment, and last year it won a business award from Prime Minister Frank Bainimarama.
It also holds lucrative government contracts, including to renovate Government House and Mr Bainimarama's official residence.
The government hasn't responded to requests for comment, but last week Attorney General Aiyaz Sayed Khaiyum was quoted as saying Ms Shin's arrest will have no effect on business in Fiji.
But that's not enough for Mr Regunamada, who says the government needs to better explain its links with Grace Road.
In an emailed statement, Grace Road strongly denied the allegations against its founder.
"Those, who wish to slander us, have created unspeakable lies about passport confiscation, forced labour, incarceration, and violence. Because we are enraged by blasphemy of the name of God and dishonouring our reverend and GR Group, 400 of us want to speak up that all these are not true. God shall let the truth be known to the entire world soon."
For now though, Ms Shin remains in custody.
The authorities in South Korea say their immediate concern is the 400 people they say are stranded, but there are worries they could be guarded by some of Ms Shin's more strident followers.
Professor Tark says repatriating them is likely to be difficult.
The police in Fiji say they are also now invesigating, but it is unclear what involvement they had before Ms Shin's arrest.
