A more thorough explanation:

A prosecutor is a type of lawyer who is responsible for bringing criminal charges against individuals who have committed crimes. They present evidence and arguments in court to try to convince a judge or jury that the accused person is guilty.

For example, in California, the district attorney is the public prosecutor who attends court and initiates and conducts all prosecutions for public offenses. At the federal level, the U.S. Attorney serves as the prosecutor for federal crimes.

Prosecutors play an important role in the criminal justice system by representing the interests of the government and seeking justice for victims of crimes. They work closely with law enforcement agencies to investigate crimes and build cases against suspects.