The foster parents of Hasanni Campbell, a 5-year-old boy with cerebral palsy who was last seen Aug. 10, were arrested on suspicion of murder today, Oakland police Officer Jeff Thomason said. “Right now, in this investigation, it’s not a missing persons case anymore,” Thomason said. “It is a homicide investigation.” Jennifer Campbell, Hasanni’s aunt and foster mother, was arrested on suspicion of murder at about 1:50 p.m. at the Union City BART station, Thomason said. At about 2:45 p.m., Louis Ross was arrested on the same charge at his Fremont home. “We believe Hasanni Campbell is no longer alive and we have the people responsible,” Thomason said. Hasanni was last seen Aug. 10 in the Shuz of Rockridge shoe store in the 6000 block of College Avenue and his disappearance prompted a multi-agency investigation. On Aug. 20, police served multiple search warrants in connection with the case, including one at Ross’ home. As authorities investigated the disappearance, community members came together to spread awareness about the case and held a vigil earlier this week in the parking lot from where Hasanni went missing. Thomason said investigators have not located Hasanni’s body and declined to comment on specific evidence in the case that led to today’s arrests. “This investigation is still ongoing and very complex,” Thomason said. He said Ross and Jennifer Campbell were being interviewed by detectives this evening.