Retaliating against a witness, victim, or informant (18 U.S.C. Sec. 1513(b)) is a federal offense. It occurs when an individual attempts to retaliate against a witness, victim, or informant for providing information in a federal investigation or prosecution. The most common forms of retaliation include threats of physical violence, intimidation, or other forms of harassment. Retaliation also includes attempts to interfere with the testimony or evidence of a witness, victim, or informant in a federal investigation or prosecution. The penalties for Retaliating Against a Witness, Victim, or Informant (18 U.S.C. Sec. 1513(b)) vary depending on the severity of the offense. It is punishable by up to 10 years in prison and/or a fine of up to $250,000. Additionally, a person who is convicted of Retaliating Against a Witness, Victim, or Informant (18 U.S.C. Sec. 1513(b)) may also be subject to supervised release, restitution, and/or community service.