David Seal, an alleged child molester who escaped four years ago from Hawaii State Hospital in Kaneohe, was arrested Tuesday on Hawaii island for allegedly killing his Puna neighbor and high school friend.

He allegedly stabbed Rory Wick, a 1999 graduate of Hana High School on Maui. He and Seal, two years Wick’s senior, hung out together and were good friends, said Ha’aheo Kalani, Wick’s classmate.

Seal was committed to the Kaneohe facility in 2002 after his acquittal by reason of insanity for the kidnapping and sexual assault of an 8-year-old Maui girl.

Hawaii County police said Seal is in custody at the Hilo police cellblock on suspicion of second-degree murder for the stabbing of the 32-year-old man in the Eden Roc subdivision of Puna. No charges have been filed.