不ふ審しん火び

noun

suspicious fire; suspected arson

Used in news reports and official contexts for a fire whose cause is unclear and possibly deliberate.

• 昨さく夜や、駅えき前まえの空あき家やで不ふ審しん火びがあった。

  Last night there was a suspicious fire at an empty house in front of the station.

• 警けい察さつは連れん続ぞく不ふ審しん火びの関かん連れんを調しらべている。

  The police are investigating a possible link between the series of suspicious fires.