Twenty one factories at the Boralugoda, Horana BOI zone were closed after a supervisor of a cafeteria in a reputed factory was tested positive for COVID-19.
PCR test will be carried out on 350 employees of the said factory and they have been asked to self quarantine.
The infected employee, who is said be a relative of a corona patient identified in Agalawatte, has been admitted to the IDH Hospital.
