By Mihi Perera The Ministry of Health says that random PCR tests and rapid antigens have been launched throughout the country to find out how the Delta Covid variant, which is currently spreading around Colombo, has spread to other parts of the country. Dr. Hemantha Herath, Deputy Director General of Health Services, Ministry of Health, told The Morning, "Steps have been taken to conduct investigations and the results of these investigations had not been received until yesterday (30th) afternoon." He stated that several persons have been infected from a construction site in Colombo, of which one person had tested positive from Kahathuduwa.