Yes, killing a police officer can be a federal crime, but only in specific situations. Federal charges apply when the victim is a federal law enforcement agent or other federal employee, or when a state or local officer is killed because of work on a federal investigation. Every other police killing is prosecuted by the state where it happened, and state penalties for these crimes are among the harshest on the books.
When Federal Jurisdiction Applies
The clearest federal case is the killing of someone who works for the federal government. Federal law makes it a crime to kill or attempt to kill any officer or employee of the United States while that person is performing official duties, or because of those duties. The same protection covers anyone assisting a federal officer in those duties.1Office of the Law Revision Counsel. 18 USC 1114 – Protection of Officers and Employees of the United States
The protected group is wider than most people assume. It includes FBI agents, DEA agents, U.S. Marshals, ATF agents, and Border Patrol officers, but also federal judges, prosecutors, civilian agency employees, and members of the military. Any federal government worker killed in connection with the job falls within the statute.1Office of the Law Revision Counsel. 18 USC 1114 – Protection of Officers and Employees of the United States
When a State or Local Officer’s Killing Is Federal
A separate statute reaches into state and local law enforcement. It makes it a federal crime to intentionally kill a state or local official, law enforcement officer, or government employee who is working with federal law enforcement on a federal criminal investigation. The killing qualifies if it happens while the officer is doing that work, because of that work, or because of the officer’s status as a public servant.2Office of the Law Revision Counsel. 18 US Code 1121 – Killing Persons Aiding Federal Investigations or State Correctional Officers
This happens more often than people realize. Local officers routinely serve on federal task forces targeting drug trafficking, organized crime, terrorism, and gang activity.3FBI. Do FBI Agents Work With State, Local, or Other Law Enforcement Officers on Task Forces A city detective assigned to an FBI drug task force is doing work that falls inside this federal protection. Killing that detective because of the investigation triggers federal jurisdiction and the same penalties that apply to killing a federal agent.
The statute also covers civilians who are not officers. A witness or informant helping federal investigators is protected on the same terms, and killing one is also a federal crime.2Office of the Law Revision Counsel. 18 US Code 1121 – Killing Persons Aiding Federal Investigations or State Correctional Officers
Federal Penalties
Federal penalties track the classification of the killing. First-degree murder under federal law—premeditated, committed by poison or lying in wait, or carried out during certain violent felonies—is punishable by death or life imprisonment. Second-degree murder, meaning an unlawful killing with malice but no premeditation, carries any term of years up to life, with no mandatory minimum.4Office of the Law Revision Counsel. 18 USC 1111 – Murder These same ranges apply when the victim is a state or local officer covered by the task-force statute, which ties its punishment directly to the federal murder provisions.2Office of the Law Revision Counsel. 18 US Code 1121 – Killing Persons Aiding Federal Investigations or State Correctional Officers
The federal death penalty, under a moratorium since 2021, was reinstated by the Attorney General in 2025.5U.S. Department of Justice. Reviving the Federal Death Penalty and Lifting the Moratorium on Federal Executions It is again available in first-degree murder cases involving federal officers.
Not every killing is charged as murder. A killing without malice, such as one that happens in a sudden confrontation or through recklessness, can be charged as manslaughter instead. Voluntary manslaughter carries up to 15 years; involuntary manslaughter carries up to 8.6Office of the Law Revision Counsel. 18 USC 1112 – Manslaughter Attempt charges also apply even when the officer survives: attempted murder of a federal officer carries up to 20 years, and attempted manslaughter up to 7.7Office of the Law Revision Counsel. 18 USC 1113 – Attempt to Commit Murder or Manslaughter
When the Case Stays in State Court
Most police killings never go federal. When a city officer, county deputy, or state trooper is killed and no federal investigation is involved, the case belongs to the state where the crime happened. Homicide is primarily a state-law matter, and state prosecutors handle these cases under their own statutes.
Penalties remain severe. Most states treat the killing of a law enforcement officer on duty as an aggravating factor that pushes the offense into the most serious category available, whether that is first-degree murder, capital murder, or an automatic enhancement to the maximum sentence. Typical outcomes range from mandatory minimums measured in decades to life without parole, and in states that still have capital punishment, killing an officer is almost always a qualifying aggravating circumstance. Definitions vary from state to state, but the practical result is the same: it is among the most heavily punished crimes in every jurisdiction.
Can Both Governments Prosecute the Same Killing?
Yes. Under the dual sovereignty doctrine, the federal government and a state can both prosecute the same conduct without violating the constitutional protection against being tried twice for the same offense. The Supreme Court reaffirmed this in 2019.8Justia. Gamble v United States, 587 US ___ (2019) State and federal law are separate legal systems, and each government has its own interest in enforcing its own laws.
In practice, prosecutors usually coordinate so one jurisdiction takes the lead, based on the strength of the case, the available penalties, and which government has the closer connection to the crime. That coordination is policy, not a legal requirement. If a state prosecution ends in acquittal or a sentence federal prosecutors view as inadequate, federal charges can still follow.