Three months into their probe, Long Beach detectives still have no suspects or motives in the shooting deaths of five people at a homeless encampment beneath the 405 Freeway. Despite a three-month investigation that has taken police into the underworld of the chronically homeless, homicide detectives said they do not have any suspects or a motive in the November slayings of five people at an encampment in the shadow of two Long Beach freeways.