NEW: Wisconsin engineer Nicolae Miu who stabbed teens on the Apple River in Wisconsin says he was acting in self defense.
Miu said the teens "surrounded him like wolves" after they accused him of being a pedoph*le.
The 54-year-old says he volunteered for a friend to go looking for a lost phone in the water.
Miu said he became fearful as the teens surrounded him and began assaulting him.
"All of a sudden, they were like wolves around me and they were attacking me from all direction and I truly, truly, feared for my life."
"They came on to me. They hit me, they got on top of me, and I don't remember anything after that."