Complex sentence: Allegedly the local police was involved in the kidnapping or at least in the protection of the kidnappers, since neighbors of the kidnappers had called the police when they saw Axel escaping then being beaten by his captors and turned a blind eye.
Split into simpler sentences: Allegedly the local police was involved in the kidnapping or at least in the protection of the kidnappers. Neighbors of the kidnappers had called the police when they saw Axel escaping then being beaten by his captors and the police turned a blind eye.