The South Brunswick School District canceled classes on Wednesday after two township residents attended a private party in Princeton with two people from Boston who later tested positive for the coronavirus, officials said.

The two South Brunswick residents who attended the party are being asked to self-quarantine until testing shows they are negative, South Brunswick Office of Emergency Management officials said. It is not clear what connection, if any, those residents have with South Brunswick schools.

Two Princeton University employees who attended the party are also under self-quarantine, university officials said. The two Boston residents who attended were infected with the coronavirus at a conference.

“Two attendees at the party had attended the Biogen Conference in Boston which has been linked to coronavirus transmission,” South Brunswick police said in an alert. “Upon their return to their homes in the Boston area, they subsequently tested positive Coronavirus.”

Schools will be cleaned and disinfected during the closure, Superintendent Scott Feder said in an email alert sent to parents.

“While this is not a quarantine, better to err on the side of caution and remain home. A great time to catch up on a binge TV show,” Feder said, asking that students not gather in groups on their day off and wash their hands.

Officials did not say if schools would reopen on Thursday.

There are no confirmed cases in South Brunswick, or Middlesex or Mercer counties as of Wednesday morning. Risk to South Brunswick residents remains low, officials said, and the closure was done out of an abundance of caution.

Feder did not immediately respond to NJ Advance Media’s request for comment.

The Wednesday closure will not count towards the 180-day total, and will be taken from the school’s snow day bank, Feder. Remote learning will not be in place during the closure.

South Brunswick schools had a half-day on Monday to give teachers time to create a remote learning strategy in the event of long-term closures.

As of Wednesday morning, there are 15 diagnosed cases of novel coronavirus in New Jersey, including one death. A number of school districts have cancelled classes or held early-dismissals while they create remote-learning plans, and many universities are switching to online classes to prevent the spread of the disease.

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Katie Kausch may be reached at kkausch@njadvancemedia.com. Follow her on Twitter @KatieKausch. Find NJ.com on Facebook.

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