The people involved is short for The people who are/were involved in [the incident]. As an adjective, involved usually means complicated , so it's not really idiomatic to speak of involved people .

Learn what a participle is, how to form and use it as an adjective or a verb tense, and how to avoid common mistakes. Find out the difference between present and past participles, and see examples of each type.

A past participle is a word formed from a verb that can be used as an adjective or to form verb tenses. Learn how to identify, use, and form past participles with regular and irregular verbs, and see examples and tests.

Learn what participles are, how they differ from verbs, and how to use them correctly in sentences. Find out the types of participles (present and past), their functions, and some examples of each.

Learn how to form and use present and past participles in English as verb forms, adjectives, and passive voice. A participle is a word made from a verb and used as an adjective or as part of a compound tense.