▁also ▁found ▁along ▁the ▁hill side . ▁Tra ces ▁of ▁sem en ▁were ▁found ▁on ▁My er ' s ▁body ▁as ▁well ▁as ▁partial ▁finger print s ▁on ▁the ▁torn ▁books ▁and ▁the ▁st icks . ▁However , ▁due ▁to ▁the ▁inf ancy ▁of ▁for ens ic ▁science ▁at ▁that ▁time , ▁no ▁sufficient ▁evidence ▁was ▁found ▁to ▁trace ▁the ▁murder er . ▁▁ ▁The ▁police ▁interview ed ▁more ▁than ▁ 1 0 , 0 0 0 ▁people ▁who ▁lived ▁around ▁the ▁area , ▁as ▁well ▁as ▁known ▁tri ad ▁members , ▁but ▁nothing ▁was ▁found . ▁The ▁crime ▁shock ed ▁the ▁community , ▁especially ▁as ▁the ▁mur ders ▁involved ▁two ▁Brit ons ▁being ▁killed , ▁which ▁was ▁extremely ▁rare . ▁A ▁few ▁months ▁after ▁the ▁mur ders , ▁an ▁anonymous ▁Hong ▁Kong ▁business man ▁don ated ▁H K $ 5 0 0 , 0 0 0 ▁to ▁the ▁Royal ▁Hong ▁Kong ▁Police , ▁as ▁a ▁reward ▁for ▁anyone ▁with ▁sufficient ▁information ▁about ▁the ▁mur ders . ▁An ▁anonymous ▁tri ad ▁member ▁contact ed ▁the ▁police , ▁suggesting ▁some ▁unusual ▁activity ▁by ▁one ▁of ▁their ▁members , ▁P ang , ▁might ▁show ▁he ▁was ▁involved ▁in ▁the ▁off ence . ▁ ▁Ar rest , ▁trial , ▁and ▁imprison ment ▁In ▁late ▁November ▁the ▁police ▁arrested ▁P ang ▁and ▁the ▁rest ▁of ▁the ▁group ▁within ▁ 4 8 ▁hours . ▁Although ▁they ▁had ▁given ▁details ▁of ▁the ▁mur ders , ▁only ▁W on ▁ple aded ▁guilty ▁and ▁served ▁as ▁a ▁pro sec ution ▁witness