Indiana Code Title 10. Public Safety § 10-16-8-6

Sec. 6. (a) Military forces, organizations, units, or detachments of another state that are in fresh pursuit of insurrectionists, saboteurs, enemies, or enemy forces may continue the pursuit into Indiana until the military or police forces of Indiana or the forces of the United States have had a reasonable opportunity to take up the pursuit or to apprehend or capture the insurrectionists, saboteurs, enemies, or enemy forces.

(b) Military forces, organizations, units, or detachments of another state may arrest or capture insurrectionists, saboteurs, enemies, or enemy forces within Indiana while in fresh pursuit.  A person who is captured or arrested by the military forces of the other state while in Indiana shall without unnecessary delay be surrendered to the military or police forces of Indiana to be dealt with according to law.

(c) This section may not be construed to make unlawful any arrest in Indiana that would otherwise be lawful.  This section does not repeal any provision of IC 35-33-3.