An outbreak of coronaviruses at the Arlington International Raceway has forced organizers to temporarily close races, the racetrack’s race director said Thursday.

    The Texas Health Presbyterian Hospital Dallas Health Care System said on Twitter that it is “aware of an outbreak of HCV” at the venue, which opened in 2014.

    “Due to the risk of spread to our guests, we are currently conducting a review of our facilities to determine how to best manage the situation,” the hospital tweeted.

    This is a developing story.

    Stay with the ABC News team for updates.

    The hospital said it would not say when it would reopen the raceway, which has been the site of an annual parade since its opening.

    Dallas Mayor Mike Rawlings, a Republican, called the news “disappointing” and urged the community to remain safe.

    He said he is “monitoring the situation closely” and asked people to stay home from their workplaces and from schools and community events.

    Officials have said that coronaviral cases have increased at the facility in recent weeks.

    An estimated 100,000 people have been vaccinated for the virus, the Texas Health and Human Services Commission said Thursday, and the number of coronovirus cases in the state has dropped to its lowest level since the epidemic began more than a decade ago.

    About 1.5 million people have tested positive for the new coronavire virus and about 70,000 have tested negative, according to the Texas Department of State Health Services.