A South Korean national is being held in custody under investigation for technological cooperation with North Korea, the Seoul Metro Police Agency (SMPA) confirmed to NK News on Tuesday.

The man — surname Kim — runs a company specializing in face recognition technology.

NK News independently identified the man’s full name and company, but the head of the investigation team at the SMPA — who wished to remain anonymous — asked that his personal information not be made public while the investigation is underway.

The police said Kim has been arrested and investigated on charges of working with North Korean technicians