Toyota Motor Corp. said a man at its Takaoka plant in Toyota, Aichi Prefecture, has tested positive for the coronavirus.

The man in his 20s is the first employee to test positive and is being treated at a medical institution in Aichi, the automaker said Friday, adding that 11 others who had close contact with him are self-quarantining at home.

The infected employee, who is in stable condition, had been absent since Monday after developing fever on Saturday. He tested positive on Thursday.

The production line he was working at was suspended temporarily Thursday and brought back online after being disinfected.

In a statement released Friday, Toyota President Akio Toyoda said, “We are treating this as an issue that affects all locations and will further enhance our communication and health checks with staff at all locations.”