The Duolingo Owl is dead, according to a statement from the Pittsburgh-based company. "It is with heavy hearts that we inform you that Duo, formally known as The Duolingo Owl, is dead," the language learning app posted on social media Tuesday morning.

Duo, the internet icon and mascot for the language-learning platform Duolingo, is dead. According to a post shared on the app’s Instagram account on Feb. 11, “authorities” are investigating the death of the owl who captured the hearts of internet users worldwide as the primary star of Duolingo’s marketing campaigns and social accounts.

Language learning app Duolingo has revealed that after many years of pestering you to learn your lessons, their owl mascot Duo is dead. There is little information currently, but they said “Authorities are currently investigating” his cause of death.

Duo the Owl was known for his silly antics, reminding Duolingo users to complete their daily lessons. He debuted with the app in 2011.

Duolingo followers will have to keep an eye on the upcoming posts, which will undoubtedly continue to surprise with its unique style of digital marketing

Duolingo, the language-learning app, killed off its owl mascot named Duo on Tuesday in what is assuredly some kind of publicity stunt. In fact, here were are writing about it. So, well played, Duolingo.