South Korean prosecutors arrested the elderly leader of a secretive religious sect on Saturday as part of an investigation into allegations that the church hampered the government's anti-virus response after thousands of worshippers were infected in February and March, according to AP.

Prosecutors in the central city of Suwaon have been questioning 88-year-old Lee Man-hee, chairman of the Shincheonji Church of Jesus, over charges that the church hid some members and underreported gatherings to avoid broader quarantines.

Lee and his church have steadfastly denied the accusations, saying they're cooperating with health authorities. The church's spokesperson, Kim Young-eun, said the church will do its best so that the truth is clearly proved in court.

More than 5,200 of the South Korea's 14,336 coronavirus cases have been linked to the church. Its branch in the southern city of Daegu emerged as the biggest cluster after infections spiked in late February.