The four patients have confirmed negative in the tests carried out by the Medical Research Institute (MRI).
The four suspected persons are two Chinese women, a Sri Lankan woman and man.
Their blood samples were sent to the IDH for testing and it was confirmed that they had not contracted the Coronavirus.
Committee appointed to prevent Coironavirus spread to meet today
The special national action committee appointed to prevent the Coronavirus from spreading is scheduled to meet today at 5.00 pm under the patronage of Health Minister Pavithra Wanniarachchi.
It was announced that the committee appointed on the directives of the President is scheduled to meet at the Health Ministry.
The committee will discuss measures required to be taken to prevent the virus from spreading in the country.