The Independent Police Investigative Directorate has slammed Western Cape police for dragging their feet in the investigation into officers' involvement in the killing of three fast-food workers. Acting spokesman for the police watchdog Robbie Raburabu said some of the officers who it was believed could contribute information to the investigation had claimed that they were working under cover and were afraid that they would be exposed if they made statements."This is a lot of nonsense," Raburabu said. "If you are prepared to be involved in an operation [and] if you are going to use your firearm, you must be prepared to blow your cover."It's tantamount to saying: 'I am allowed to kill people but I am not allowed to be accountable for what I did.'"The directorate is attempting to investigate:A February incident in which police opened fire on a taxi that they believed had been involved in an ATM robbery and killed a Nando's employee; andThe killing of two McDonald's employees when their taxi was caught in crossfire between police and robbers.Raburabu said provincial police management should make sure that officers gave statements."Police should know that, once they shoot someone, they are going to have to give statements."The directorate should not be the ones pushing them for statements," he said.Western Cape police spokesman Lieutenant-Colonel André Traut declined to comment...