Serbia on Sunday rejected any responsibility for a powerful explosion that temporarily cut water and power supplies to large swathes of neighboring Kosovo, with Serbia's president claiming such accusations are part of a "hybrid" warfare against his country.

Serbian President Aleksandar Vucic pledged on Sunday his country would help investigate after an explosion in Kosovo that disrupted water supplies and that the government there blamed on Belgrade. The explosion on Friday evening hit a canal that sends water to Kosovo's two coal-fired power plants - accounting for most of the country's power production.

Kosovo and Serbia continued to sling allegations at each other on Sunday, just days after an explosion targeting a strategic canal in Kosovo sent tensions soaring between the long-time rivals.