(CNN) A New York Police Department traffic enforcement agent died as a result of Covid-19, NYPD Commissioner Dermot Shea said Sunday, bringing the number of virus-related deaths on the force to 20.

Agent William Hayes, an Army veteran, had been with the department for nearly 31 years, Shea said in a tweet

"Our prayers are with his loved ones & colleagues today and every day," Shea tweeted.

With profound sadness, I announce the passing of Traffic Enforcement Agent William Hayes as a result of #COVID-19. William was a U.S. Army veteran & member of our NYPD family for nearly 31 years.



Our prayers are with his loved ones & colleagues today and every day.#NeverForget pic.twitter.com/9RCCoAKYXt — Commissioner Shea (@NYPDShea) April 12, 2020

The department, along with the city, has been hit hard by the coronavirus. On Saturday, 6,743 uniformed members, or more than 18% of the workforce, were out sick, the NYPD said in its daily report. Some 2,318 uniformed members and 471 civilian members had tested positive for the coronavirus, the report said.

Of the more than 547,000 Covid-19 cases nationwide as of Sunday, New York state has 189,020 and 9,385 people have died, according to Johns Hopkins University . New York City had more than 103,000 of those cases and 6,898 deaths as of Sunday.

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