Three inmates at the Jackson County Detention Center have tested positive COVID-19, county officials revealed Monday afternoon – the first such cases in the facility.

All three inmates, who were asymptomatic, have been in precautionary isolation since last week, the county said in a release, inmates who have been in close contact the positive-case inmates are in isolation and under observation,

Friday, the sheriff's office said two symptomatic suspected inmates were in medical isolation and 16 inmates who had contact with them were in precautionary isolation to monitor for symptoms. The sheriff's office, working with prosecutors and judges, has released 150 non-violent inmates from the jail in recent weeks, providing some isolation space.

Last week, the sheriff's office reported four inmates and one sheriff's deputy had been tested during the pandemic, with negative results.

Through Sunday, the Jackson County Health Department reported 225 confirmed cases of COVID-19 in Eastern Jackson County, including seven deaths. The department covers the county outside of Kansas City.

Eastern Jackson County reached 200 cases last Thursday, and the fourth death happened over the weekend. The 50-59 age range accounted for the most cases with 60, while the 40-49 age range has 48 cases. Fifty-four percent of confirmed cases are female patients.

In Kansas City, the health department has confirmed 323 cases through Monday morning, including eight deaths. The total Friday afternoon was 300 cases.