Complex sentence: Batman suspects Falcone to be behind the incident after finding a white rose on one of the bodies and, after investigating the crime scene, deduces that a mercenary sniper had shot a chemical barrel during a shootout with GCPD, causing the explosion.
Split into simpler sentences: Batman suspects Falcone to be behind the incident after finding a white rose on one of the bodies. After investigating the crime scene, Batman deduces that a mercenary sniper had shot a chemical barrel during a shootout with GCPD, causing the explosion.