JAKARTA: Indonesia's second biggest coal miner PT Adaro Energy Indonesia Tbk said on Monday it has shipped roughly 300,000 tonnes of coal to some buyers in Europe, where countries are seeking a new source of the fuel due to sanctions on Russia. The coal was sold via the spot market, chief finance officer Lie Luckman told media, but added the company would continue to focus on its longstanding customers. "Indeed there has been some demand from Europe, but our market is mainly Asia. We will focus on fulfilling our commitments to our customers who already have long-term contracts with us," Luckman said. Demand from Europe would likely increase, but markets such as Japan, China, South Korea and India, which are among Adaro's biggest buyers, would remain priorities, he said. The European Union earlier this month imposed sweeping sanctions on Russia over its invasion of Ukraine, which included banning imports of Russian coal from mid-August.