Around, and eventually i heard some drilling going on. Reporter police say a cadaver dog picked up a scent under the garage floor. Cadaver dogs indicated the presence of a possible remain under the concrete floor of a garage. The concrete was removed. Reporter police did find bones. The medical examiner says they appear to be animal bones, but additional analysis is under way. The dig happened a block away from the last place 10yearold Kevin Collins was seen on february 10th, 1984. People who lived in the neighborhood when he vanished say his disappearance gripped the community. The whole community was involved. That somehow because the picture was everywhere. We might see the boy. Reporter no one ever saw collin again. Many hope 28 years later, sfpd has some answers for the collin family. Hopefully for the family there is some sort of solace. Reporter now tonight San Francisco police say the people who currently live in this home are not suspects in this case, but a person of interest