Before he could proceed in his investigation , incriminating evidence concerning the bombing of the Southern Water Tribe center was found in his apartment .
Mako continued his investigation and eventually grew suspicious of the businessman , Varrick .
Before Mako could proceed in Mako investigation investigation , incriminating evidence concerning the bombing of the Southern Water Tribe center was found in his apartment .
Mako continued his investigation and eventually grew suspicious of the businessman , Varrick .