The Korean banyan is known locally as payom and is a symbol of the southern province.
The felled trees were planted two years ago along a 20-kilometre stretch of Tamot-Ban Pru Naikhao Road in Tamot district in honour of His Majesty the late King Bhumibol Adulyadej.
Residents of Ban Pru Naikhao area told police they’d seen several unknown people chopping the trees down with machetes.