PITTSBURGH -- Steelers coach Mike Tomlin was recently diagnosed with COVID-19, sources told ESPN.

Tomlin, 48, was diagnosed last week. The Steelers could not confirm the head coach's diagnosis but said members of the coaching staff and personnel were sent home from the facility last week after a couple of positives came up in routine testing.

Tomlin, who is set to enter his 15th season at the helm of the organization, is in good health, a source said.

The virus also affected the Steelers' coaching staff during the season with then-quarterbacks coach Matt Canada and special-teams coordinator Danny Smith missing time due to COVID-19 protocols.

On Monday afternoon, Tomlin posted a statement on social media, thanking well-wishers. He did not confirm any diagnosis, however.

"I want to thank everyone who reached out to express their concern for my health. Luckily I have had minimal symptoms and I'm thankful to be in good health," he wrote. "I want to thank those media professionals who knew about my situation and respected my privacy. It is very much appreciated. I'll be back in the office soon while I continue to work virtually from home. Thanks for your support and well wishes!"

NFL Network first reported news of Tomlin's diagnosis.