1An incident, affair, or case — often referring to noteworthy or troubling occurrences such as crimes, accidents, or scandals. In news contexts, 事件 alone often implies a criminal case.
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.
社内で不正事件が発覚し、大きなスキャンダルになった。
A fraud case came to light within the company and it turned into a major scandal.
この小説は一つの殺人事件を軸に物語が進む。
This novel's plot revolves around a single murder case.