MOSCOW: Russian pipeline monopoly Transneft, which was rocked by an oil contamination crisis earlier this year, said on Thursday that its second-quarter net profit had risen 23.7% year on year to 55.8 billion roubles ($846 million).

The company said its possible liabilities over the contamination of Russian oil via the Druzhba pipeline could have a significant impact on its financial results in the future. It said it had not calculated those liabilities yet.

The company posted second-quarter revenue of 260.2 billion roubles, up from 238.1 billion roubles in the same period last year.