BOISE, Idaho (AP) — Former Idaho Govs. Phil Batt and Cecil Andrus say current Gov. C.L. "Butch" Otter is turning the state into nuclear waste repository.

The former governors at a Thursday news conference blasted Otter's recently revealed deal with the U.S. Department of Energy to allow 50 spent nuclear fuel rods into the Idaho National Laboratory for research.

Andrus says the shipments set for this June and January of next year weigh 37.5 tons. He says the federal government doesn't need that much for research.

Batt and Andrus say Otter's deal violates a 1995 agreement Batt made with the federal government to clean up the southeastern Idaho facility and keep additional waste out.

Attorney General Lawrence Wasden says the state won't allow the spent fuel in unless the 1995 deal is honored.