Chicken and Sausage Gumbo

1/2 lb light smoked sausage, cut into 1/2 inch thick slices
1 -3 tablespoon vegetable oil
5 tablespoons all-purpose flour
1 cup coarsely chopped onions
1 cup chopped celery
2 garlic cloves, pressed
1 medium green bell peppers, chopped
2 cups chicken broth 1 (28 ounce) cans diced tomatoes
1 -2 teaspoon creole seasoning 4 cups chopped cooked chicken hot cooked rice

Directions
Cook sausage over high heat in Dutch oven 5 minutes, stirring often.
Remove sausage with a slotted spoon.
Drain on paper towels.
Add enough oil to drippings in Dutch oven to equal 3 tablespoons, and whisk in flour; cook over medium-high heat, whisking constantly, 5 minutes.
Add onion and next 3 ingredients; cook 5 minutes, stirring often.
Stir in broth and next 2 ingredients.
Bring to a boil; cover, reduce heat, and simmer 5 minutes.
Add sausage and chicken; simmer, covered, 5 minutes.
Serve over rice.