KIDS TRIVIA

Detailed explanation-1: -Cause of Death: In the 1940s, Myrtle was hiding from a bully in the bathroom when Tom Riddle came in to open the Chamber of Secrets. The basilisk emerged and killed Myrtle, leaving her body alone for hours before it was found.

Detailed explanation-2: -Myrtle Elizabeth Warren (c. 1929 – June 1943), more commonly known after her death as Moaning Myrtle, was a Muggle-born witch who attended Hogwarts School of Witchcraft and Wizardry from 1940 to 1943 and was sorted into Ravenclaw house. She was killed in 1943 by the Serpent of Slytherin, under Tom Riddle’s orders.

Detailed explanation-3: -Everyone is aware of “Miserable, moaning, moping Myrtle, ‘’ (CoS 54) the annoying ghost that haunts the second-floor girls’ bathroom at Hogwarts. We know that she was killed the first time that the Chamber of Secrets was opened, but what all do we know about her death?

Detailed explanation-4: -Moaning Myrtle is a ghost of a female student that can be found crying in girls’ lavatories. She belongs to Ravenclaw and was killed by Basilisk for being a Muggle-born witch.

Detailed explanation-5: -Most definitely, yes. I would like all the authors of all the other answers who berate the OP’s question to please read the books again as you seem to have missed a lot. Dumbledore almost certainly knew Riddle was behind the attacks.