Kempton Park – A riot broke out outside the Arwyp Medical Centre in Kempton Park on Saturday after a man believed to be a Nigerian died in a police van.Police members were accused of suffocating him, the Independent Police Investigative Directorate (Ipid) confirmed.According to Netcare911 spokesperson Athlenda Mathe, scores of people sustained minor injuries and two others sustained moderate to serious injuries following the riot."Reports from the scene are that at least five hundred people gathered near the Arwyp Medical Centre. The cause of the riots are subject for police investigation and comment."Netcare911 had to be called to the scene and treated several injured, with some taken to a nearby hospital for further medical care."Those that were injured were treated for gas inhalation, assault and injuries inflicted by stones," Mathe said.The crowd had since dispersed.Earlier, Ipid spokesperson Robbie Raburabu told News24 that police say the man was arrested for possession of drugs."As soon as he saw the police coming he swallowed the drugs and overdosed and died on the scene," said Raburabu."It was a sizeable amount of drugs."