Of the nine confirmed cases, six were recorded in Accra and three in the second largest city Kumasi.
"Four of the cases in Accra were contacts of existing cases, with no symptoms, but detected during the enhanced contact tracing and testing," the GHS said.
One of the travelers under mandatory quarantine in the capital, who had tested negative earlier, converted to positive upon repeat testing. Besides, a 37-year-old Ghanaian woman with no travel history and no contact with a confirmed case also tested positive.
Two cases recorded in Kumasi were Ghanaians who had traveled back from France within the past 14 days. The third one is a Ghanaian with no travel history nor contact with any confirmed case, added the statement.
The West African country recorded its first two cases on March 12.
Ghana has extended closure of entry points to prevent any further importation of the infection into the country.