Health officials in Ontario reported four new cases of COVID-19 on Sunday, tentatively bringing the total number of cases in the province to 32.

Three of the cases were confirmed by the Ministry of Health, while a fourth was reported by authorities in Peel Region.

The new cases confirmed by the ministry include two women in their 40s and 60s and a man in his 60s.

In a news release, the ministry said that the woman in her 40s tested positive for coronavirus after she returned from Colorado on March 2.

The woman went to Sunnybrook Health Sciences Centre's emergency department, was tested there and was sent home that day. She remains in self-isolation.

The woman in her 60s returned from France on March 2 and presented herself to Scarborough Health Network General's emergency department, in Toronto, on March 7, according to the ministry.

It also said that a man in his 60s returned from Washington, D.C., on March 3 and presented himself to North York General Hospital's emergency department, also in Toronto, on March 7.

Both patients tested positive and have since been discharged. They remain at home in self-isolation, the ministry said.

The instance in Peel is a man in his 50s who returned from a trip to Germany on March 7.

Of all the confirmed cases in Ontario, four have been resolved, the ministry added.

"At this time, the virus is not circulating locally," the ministry said.

"However, given the global circumstances, Ontario is actively working with city and health partners to plan for the potential of local spread."

Dr. David Williams, Ontario's chief medical officer of health, is expected to provide an update today at 3 p.m.

Ontario has the most confirmed cases of COVID-19 among all provinces and territories in Canada.