After a crime occurs, the police make initial investigations. The prosecutor ("procureur") or, in some serious cases, the "juge d’instruction" then control or supervise the police investigation and decide whether to prosecute. Unlike common law countries and many civil law countries, French prosecutors are members of the judicial branch. Issuing arrest warrants or formally questioning the accused or witnesses must receive judicial approval, but decisions on searches and phone-tapping are often delegated to the police because of limited judicial resources. There are also simplified procedures for crimes in flagrante delicto and crimes relating to terrorism and drugs.