Federal Bureau-Investigation
21 3rd St N, Great Falls, MT 59401
(406) 453-9619
Lone Rock Investigations
1905 Belle Vista Dr, Great Falls, MT 59404
(406) 403-3420
Elite Security Services
3905 4th St, NE Great Falls, MT 59404
(406) 455-1399
Criminal Investigation Division
119 1st Ave N Ste, 200 Great Falls, MT 59401
(406) 791-2708
Lighthouse Investigations
PO Box 3443 Great Falls, MT 59403
