TRIPOLI, Libya — Libya’s transitional government has been sworn in before the country’s interim leader, another step along to the oil-rich country’s roadmap to elections next year.

The new government read the oath of office before its leader, Abdel-Jalil Mustafa, on Thursday. The lineup of relative unknowns will confront daunting challenges, like establishing control over the fractured nation after the ousting of Moammar Gadhafi’s 42-year regime.

Prime Minister Abdurrahim el-Keib said the government’s first task is to formulate plans to build state institutions. Gadhafi left few institutions behind, preferring one-man rule.

The formation of the Cabinet clears the way for the next key step on the timeline — election of a 200-member national congress by the end of June.