Kosovo's Interior minister Xhelal Svecla said on Saturday that police had arrested eight people after an explosion hit a canal that sends water to its two main power plants, an incident Pristina labelled a "terrorist act" by neighbouring Serbia.

Serbia's president has rejected any responsibility for a powerful explosion that temporarily cut water and power supplies to large swathes of neighboring Kosovo.

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.

Kosovo worked to shore up water and power supplies on Saturday and stepped up security at strategic sites after an explosion hit a canal that sends water to its two main power plants, an incident Pristina labeled a “terrorist act” by neighboring Serbia.

Kosovo worked to shore up water and power supplies on Saturday and stepped up security at strategic sites after an explosion hit a canal that sends water to its two main power plants, an incident Pristina labelled a "terrorist act" by neighbouring Serbia.

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.

By Valentina Dimitrievska in Skopje Eight people have been arrested in connection with what Kosovo police have classified as a terrorist attack on a water channel in northern Kosovo at the end of last week.