Castle Queen Murder Suspects

Riddle: In a round castle there were 3 suspects a joker a maid and a king the king said he was sleeping the joker said he was telling a joke and the maid said she was sweeping in a corner. Who did it?

Answer: The maid there is no corners in a round castle. Source: https://riddles.com/3639

In a round castle there were 3 suspects a joker a maid and a king the king said he was sleeping the joker said he was telling a joke and the maid said she was sweeping in a corner. Who did it? — Castle queen murder suspects by Landon Riddle