Fire crews attended Tadros Court in High Wycombe at 1:24 AM on Monday 4 July.
Three vehicles, located between two buildings, were on fire when they arrived.
Two of the vehicles were 100 per cent damaged by fire, and the third was 50 per cent damaged by fire.
External fixtures and windows of a two-storey block of flats were also affected.
Thames Valley Police also attended the incident.

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