Killing trees is bad, killing people apparently not a problem.

(Berkeley)– UC police have charged a man who has been sitting in a tree in People’s Park for the last three months with attempted murder.

Matthew Dodt, 54, was arrested around 3:15 am today after a six-hour standoff, according to Lt. Mark Decoulode of the UC Berkeley police department.

Dodt allegedly stabbed a man who had climbed up into the tree for a conversation, said Lt. Decoulode. Dodt stabbed the man’s hand, which had been resting on his neck. The man was treated at a local hospital and released.

Dodt, who also goes by the name Midnight Matt, climbed up into a tree in People’s Park in November. He was protesting changes to the park, such as the installation of a small museum,  proposed by George Beier, who ran unsuccessfully for City Council in November.

While UC police said that Dodt apparently invited the victim into his tree, Dodt told the Daily Californian that four men approached him and threatened to burn down the tree to end the tree sit. When one of the men started to climb up the tree, Dodt got out his knife to protect himself, he told the paper.

Dodt has been a member of Copwatch, an organization that monitors police behavior, and Food Not Bombs, which distributes free food.