Four people have been arrested in connection with a string of arson attacks at farms.
Sussex Police detained two men, aged 21 and 16, and two 17-year-old women and questioned them before releasing them on bail.
They were arrested as part of the investigation into fires at five barns around the Haywards Heath and Uckfield area on Wednesday night last week.
The arson attacks caused major blazes which needed dozens of firefighters to bring under control.
Fire crews said believed the fires were linked and started by vandals driving from farm to farm.
They were at farms in Hanlye Lane, in Cuckfield, near Haywards Heath, Sloop Lane, in Scaynes Hill, near Haywards Heath, and in Fletching and Newick, near Uckfield.
Anyone with information should call police on 0845 6070999.
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