Story highlights "The officials dealt recklessly with a piece of an artifact that is 3,300 years old," prosecutor says

Those facing charges include six restorers

(CNN) Eight museum employees will be charged with negligence after a botched reattachment of the beard on King Tutankhamun's mask, Egyptian authorities said.

King Tut's burial mask is displayed at the Egyptian Museum in Cairo and is considered a valuable artifact from ancient history.

There have been differing accounts of how the mask's blue-and-gold braided beard broke off since its damage came to light in 2014.

At the time, a museum conservator said the beard detached when the mask accidentally fell during cleaning. It was quickly reattached with a strong adhesive, but the glue left a gap between the face and the beard, the conservator said.

Others said the beard loosened with age.

Read More