  a . m . ▁on ▁November ▁ 1 5 . ▁▁ ▁Four ▁security ▁cam eras ▁at ▁the ▁University ▁of ▁Ro chester ▁recorded ▁a ▁yellow ▁Je ep ▁W r ang ler ▁like ▁Por co ' s ▁leaving ▁the ▁campus ▁at ▁ 1 0 : 3 0   p . m . ▁on ▁November ▁ 1 4 ▁and ▁returning ▁at ▁ 8 : 3 0   a . m . ▁on ▁November ▁ 1 5 , ▁this ▁being ▁the ▁period ▁during ▁which ▁pro sec utors ▁claim ▁the ▁Por cos ▁were ▁attacked . ▁ ▁A ▁neighbor ▁of ▁the ▁Por co ▁family ▁later ▁test ified ▁at ▁trial ▁that ▁he ▁saw ▁Por co ' s ▁yellow ▁Je ep ▁in ▁the ▁family ' s ▁drive way ▁on ▁the ▁evening ▁of ▁the ▁attack . ▁Also , ▁University ▁of ▁Ro chester ▁students ▁test ified ▁that ▁they ▁did ▁not ▁see ▁Por co ▁sleep ing ▁in ▁a ▁d orm itory ▁l oun ge ▁on ▁the ▁night ▁of ▁the ▁attack . ▁ ▁V eter inary ▁clin ic ▁job ▁Por co ' s ▁employ er , ▁veter in arian ▁John ▁K ear ney , ▁test ified ▁at ▁trial ▁that ▁Por co ▁had ▁been ▁trained ▁in ▁clean ing ▁up ▁after ▁animal ▁sur ger ies . ▁After ▁the ▁trial , ▁jur ors ▁commented ▁that ▁this ▁testim ony ▁helped ▁to ▁explain ▁the ▁fact ▁that ▁police ▁did ▁not ▁find ▁blood ▁in ▁Por co ' s ▁vehicle ▁after ▁the ▁attack . ▁ ▁Wit ness ▁identification ▁Christopher ▁Bow d ish , ▁a ▁Beth le hem ▁Police ▁detect ive , ▁stated