いるところを見つかった

was caught doing

→ 居る
phrase Rare #38,686
was caught doing Used when someone is discovered in the middle of an action, often doing something wrong. The more natural pattern is [verb-te-iru]ところを見つかった, such as 盗んでいるところを見つかった (was caught stealing).
JA: 彼女は宿題をしているところを見つかった。
EN: She was caught doing her homework.