He suspected a woman of wanting to commit suicide dressed as a maid: it was an umbrella

I've confused an umbrella with a person

The woman called the police scared to tell him the situation. However, when the police arrived on the scene to try to convince the woman not to jump into the void, she understood that there was no one and that she had mistaken for a silhouette a red umbrella.

I've confused an umbrella with a person

However, Casey was not the only person to have called the authorities for this same case. Several users who have read this thread have confessed to having called 911, also thinking that it was about a woman.