The Civil Police are organized accordingly to functions. Scrivener ("escrivão") is the lower rank position responsible for the internal work inside the police premises (e.g., collecting witness statements). Detective ("detetive") or investigator ("investigador") is the position responsible for actions outside the premises (e.g., investigating the circumstances of a crime). Delegate ("delegado", similar to captain in the US) is the senior official (required to have a law degree) responsible for the lower ranks and for coordinating the whole work (investigations) of the Civil Police. The Civil Police also have the assistance of experts ("peritos"), which are the technical body. The Federal Police follows a very similar structure to the Civil Police, the Federal Highway and Railway police.