Sixth police officer under investigation after man died hours after he was released from custody
The watchdog has previously served notices on four South Wales Police officers and a custody officer.
Three of the previous notices relate to when Mr Hassan was in custody at Cardiff Bay police station, and two concern the actions of officers who attended the Newport Road address on the evening of Mr Hassan's arrest. If an officer is found to have breached professional standards at gross misconduct level they can be dismissed, and at misconduct level they can receive a written warning.joined a protest march through Cardiff after Mr Hassan's deathSouth Wales Police has previously said the force provided the IOPC with information and material, including CCTV footage and body-worn video.