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/*Hasanni*/, who has cerebral palsy, was reported missing by his foster father, /*Louis Ross*/, from the parking lot of the Shuz of Rockridge Shoe store in the 6000 block of College Avenue about 4:15 p.m. on Aug. 10.
Hasanni's foster mother, /*Jennifer Campbell*/, works at the store. Ross, Jennifer Campbell, Hasanni and another child lived together in Fremont.
Oakland police and Crime Stoppers initially offered a $10,000 reward for information leading to the whereabouts of Hasanni.
But Oakland police said the Alameda County Board of Supervisors and San Francisco County are contributing another $25,000 each to the reward.
Hasanni's biological parents live in San Francisco and the city's Department of Human Services had been involved in supervising him by checking in with his foster parents periodically.
San Francisco Mayor Gavin Newsom said in a statement, "We hope this award will lead to information on the whereabouts of Hasanni Campbell."
Newsom said, "If you have any leads, please contact the Oakland Police Department."
Oakland Acting Police Chief Howard Jordan said in a statement, "This case has touched everyone in our community and across the region and with the increased reward money we are hoping to bring closure to this case. The Oakland Police Department wants to thank everyone who is involved in this generous effort."
Oakland police said anyone with information about the case is urged to call them at (510) 777-3211 or (510) 238-7934 or Crime Stoppers at (510) 777-8572.
Last Friday, Oakland police said they consider Hasanni's disappearance to be a homicide case, not a missing persons case. They arrested Ross on suspicion of murder and Jennifer Campbell on suspicion of being an accomplice to murder.
But Ross and Campbell were released from custody earlier this week after the Alameda County District Attorney's Office said there's not enough evidence to charge them at this time.
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