Police curfew has been imposed in Divulapitiiya and Minuwangoda police divisions, Army Commander Lt. General Shavendra Silva said.
He added that this covered seven GS divisions in the two Police areas.
The curfew has been imposed after a 39- year-old apparel industry worker has been tested positive for COVID19.
She was being treated at the Gampaha hospital for fever. Government authorities said over 100 people who had close contacts with her had been placed on quarantine.