BOTHELL, Wash. -- A Bothell High School woodshop teacher who was attacked on campus last week says physically he's recovering, but emotionally it is still very difficult.

"I am healing. I am doing the best I can and I hope to be back as soon as possible, doing what I do best, which is touching the lives of students," said Pygott.

Cal Pygott, 63, was working on a loud machine in his classroom and wearing ear muffs when someone came from behind and hit him hard enough, it knocked him out. When he came to, he says he was not in good condition. He had a zip tie around his neck, and the attack left his face red and swollen.

Another staff member found Pygott stumbling outside the classroom, removed the zip tie and called 911. He was taken to Harborview Medical Center with serious injuries.

Police are still searching for the person who attacked him. Since the assault last Thursday, Bothell police detectives have been pouring though hours of surveillance video, conducting interviews and following up on leads. So far no arrests have been made.

While that work continues, Pygott says he's been comforted by the community's support. He's heard from students, colleagues and teachers from around the state. He wants everyone to know he's on the mend.

Anyone with information is asked to call the tip line at 425-487-5551 or contact Bothell Police via Twitter @BothellPolice.