British police have arrested a second suspect for cutting down one of Britain’s most famous trees: the Sycamore Gap tree in Northumberland.

On Thursday, hikers discovered that a two-hundred-year-old maple tree had been cut down. Shortly thereafter, a 16-year-old boy was arrested for vandalism. He was temporarily released.

The tree became famous because it appeared in a key scene in Kevin Costner’s film Robin Hood: Prince of Thieves in 1991. Since then, the maple has also been known as the “Robin Hood Tree” and has become one of the most photographed trees in Britain.

The 60-year-old was arrested and is in custody last night. Northumberland Police say this second arrest shows how seriously they are taking the case.

Despite the arrests, much remains unclear about the motive behind the destruction. “Although one more person has been arrested, this investigation is still in its early stages, so we continue to ask the public to come forward with any information that can help solve the case.

The BBC reported that forensic research has now been conducted on the tree. “In 31 years of investigating archaeology, I have never examined a tree,” one police officer said.