South Korea accused a conservative pastor of violating self-isolation rules and obstructing contact tracing at a church where 240 infections have fuelled the country’s worst outbreak in over five months, Reuters reports.

The focus on the Sarang Jeil Church, led by Rev Jun Kwang-hoon, revived bad memories of the country’s biggest outbreak among followers of a secretive Christian sect back in February.

The health ministry said it had filed a complaint against Jun, an outspoken government critic, for violating self-isolation rules by participating in a rally on Saturday, and for “obstructing” a medical investigation into the outbreak by failing to provide a full list of church members for testing and tracing.