An incident, event, or case — often referring to noteworthy or problematic occurrences such as crimes, accidents, or scandals.
昨夜、近所で大きな事件が起きて警察が出動した。
A serious incident occurred in the neighborhood last night and the police were dispatched.
その事件はまだ未解決で、捜査が続いている。
That case is still unresolved and the investigation continues.
社内で不正の事件が発覚し、大きなスキャンダルになった。
A fraud incident was uncovered within the company and it became a major scandal.