FIRE INVESTIGATION ACT

Amends the Fire Investigation Act. Authorizes the Attorney General, or the State's Attorney in a county in which a violation occurs, to bring an action against violations of rules adopted under the Act. Authorizes (rather than requires) the Office of the State Fire Marshal or local officers charged with the duty of investigating fire to enter (rather than inspect and examine) all buildings, premises, occupancies, structures, or portions thereof in their respective jurisdictions. Provides that if a dangerous condition, code violation, or fire hazard is found to exist, then the Office of the State Fire Marshal or the local officers shall order the dangerous condition removed or remedied. Provides that if, in the determination of the Office, the condition of a building, structure, occupancy, premise, or portion thereof poses an immediate threat or hazard to safety or health, the Office must require the building, structure, occupancy, premise, or portion thereof to be vacated immediately and not reoccupied until the necessary repairs and improvements are completed and the Office or the local officers have inspected and approved them. Requires the Office to cause a notice to be posted at each entrance to each such structure. Prohibits entry in such a structure, except for the purpose of making the required repairs. Requires that notice to remain posted until the required repairs are made.