NFL referee Clay Martin has been hospitalized with COVID-19, his family told the Tulsa World on Saturday.

Martin, 45, was originally pulled from officiating the Pittsburgh-Cincinnati game on Dec. 21 and was reportedly asymptomatic. He has been in quarantine at his home near Tulsa, Okla., since.

“Our family is very appreciative of all the heartwarming messages that we’re receiving. Clay is receiving medical attention at St. Francis. Our family will continue to find peace in our faith, each other and many, many people who we are blessed to call friends,” Martin’s family said in a statement to the Tulsa World.

Adrian Hill will replace Martin on Sunday, the third game Martin has missed.

Martin has been an NFL official since 2015, serving the past three seasons as referee.

Martin is also a high school basketball coach in the Tulsa suburb of Jenks.