(AP) — An Australian company says it discovered a significant oil deposit in western Nebraska, but state officials say it’s too soon to say how much oil might be produced.

Officials at the Nebraska Oil and Gas Conservation Commission say Blackstar Petroleum needs to do more exploration in Banner County.

Blackstar said in May that two wells it drilled in May might contain between 4.3 million barrels and 23.2 million barrels of oil.

The state’s Bill Sydow says Blackstar might be touting the find to attract partners to help do more exploratory drilling.

Sydow says Blackstar has leased 40,000 acres in Nebraska, but it has done little oil exploration in the United States.