Bahraini police, protestors clash after funeral October 3, 2012 -- Updated 0138 GMT (0938 HKT) The deceased was a 23-year-old with sickle cell anemia who had been in prison Opposition group says he was denied adequate care Government said he had been treated at hospital since August After funeral, protestors threw gas bombs, rocks at security forces (CNN) -- Police in Bahrain clashed with mourners at a funeral for a 23-year-old man with sickle cell anemia who died in custody, officials said Tuesday. Mohammed Mushaima, who was serving a seven-year sentence for vandalism, rioting, assaulting a police officer, and resisting arrest, died during the early morning hours, Bahrain's Information Affairs Authority said. The written statement said a medical examiner determined "the death was natural and caused by sickle cell complications." But the opposition political party Al-Wefaq accused the government of depriving Mushaima of medical treatment. The government denied that, saying Mushaima had been treated at Salmaniya Medical Complex since being admitted in late August. In an apparently unrelated development, Bahraini authorities began rounding up nine medics from the hospital Tuesday, a day after an appeals court this week upheld their convictions for their role in anti-government protests last year. Videos posted on YouTube appeared to show large crowds of marchers at Mushaima's funeral, many holding aloft his picture while his casket was carried through the streets. Another apparently shows protestors after the funeral throwing rocks and Molotov cocktails as police use water cannons to disperse the marchers. The opposition group February 14 said the protestors "shouted angrily against the King Hamad (Bin Isa Al-Khalifa) and the royal family condemning them" for Mushaima's death. CNN cannot independently verify the authenticity of these videos. The Bahrain News Agency said "saboteurs" attacked police who "observed self restraint, ordering the rioters to disperse more than once before intervening to restore order in conformity with the law provisions." It was the second time in recent days police and protestors have clashed. On Friday, a 17-year-old protester died in the village of Sadad.