A Road Traffic Inspectorate (RTI) officer is under investigation after he was allegedly caught on CCTV cameras stealing a cellphone at a fast food outlet, the KwaZulu-Natal transport department said on Saturday.Department spokesperson Kwanele Ncalane said they were probing the incident and sent a letter to the officer to ask for clarity and to give "reasons why he should not be suspended".The department's investigation is running alongside a criminal investigation, Ncalane added.The video footage shows the officer at the front of the queue at a fast food outlet. After standing there for a few minutes, he removes what appears to be a cellphone from the store counter and puts it in his pocket. He then leaves the store.There were other customers in the store at the time.According to Daily News, the incident allegedly took place in Pietermaritzburg. Ncalane added: "The uniform of our officers must be respected. We expect our officers to be beyond reproach and as such, we take this incident in a very serious light."