Indiana Code Title 4. State Offices and Administration § 4-20.5-14-2

(1) An agent of the United States, having knowledge of the facts, must file an accurate, certified description and plat of the property acquired by the United States with the land office.

(2) The state retains concurrent jurisdiction with the United States in and over the property, so that civil or criminal process issued under the state or orders of a state court or judicial officer can be executed: