"Prices are climbing, in part, in the case of some products, because export volume has increased," Orbán said.

He said the government decided to introduce export restrictions from October, after it notifies Brussels of the measure and waits for four months for clearance.

"We can roll out restrictions in October, but until then we will introduce mandatory reporting of exports and we will try to introduce pre-emption rights for the state to try to keep construction materials of key importance in the country," he added.