Washington called on the rival sides in Libya to agree on a constitutional basis for holding the country's long-awaited general elections.

U.S. Ambassador to Libya Richard Norland held talks with Khalid al-Mishri, the head of the High Council of State, in the Egyptian capital Cairo.

"We agreed on the need to support the U.N.-led process intended to lead to parliamentary and presidential elections as soon as possible as demanded by Libyan voters," Norland said in a statement issued by the U.S. Embassy.

The U.S. diplomat urged all participants in the upcoming Cairo meeting "to work on behalf of the Libyan people and reach the necessary consensus for establishing the constitutional basis for elections."

Representatives of the Tobruk-based parliament and Tripoli-based High Council of State, which acts as a senate, will participate in the second round of Egypt-hosted talks on May 15 to agree on constitutional arrangements for holding the polls.

The first round of discussions was held in Cairo last month under U.N. auspices.

Tension has mounted in Libya since parliament in March gave confidence to a new government headed by Fathi Bashagha, a former interior minister, while Abdul Hamid Dbeibah insists on remaining at his post as the country's prime minister.

Libyans are waiting for the stalled elections to take place in the hope that the vote will contribute to ending years of armed conflict that has plagued the oil-rich country.