Parents and their two children have been found dead in a Herndon home, Fairfax County police said Tuesday.

Authorities investigate Tuesday at a Herndon home where four family members were found dead. (Justin Jouvenal/The Washington Post)

Police said in a tweet that there does not appear to be any ongoing threat to public safety. They said the children did not attend school on Monday or Tuesday.

Police did not immediately say how the four died or provide additional details.

This post has been updated.