U.S. Homeland Security Secretary Alejandro Mayorkas, who is vaccinated, tested positive for COVID-19 on Tuesday morning, the Department of Homeland Security (DHS) said.

"Secretary Mayorkas tested positive this morning for COVID-19 after taking a test as part of routine pre-travel protocols," the DHS said on Twitter.

"He is experiencing only mild congestion; he is fully vaccinated and will isolate and work at home per CDC protocols and medical advice. Contact tracing is underway,”the tweet added.