South Sudan's President Salva Kiir has dissolved parliament, a long-awaited step to pave the way for the appointment of lawmakers from formerly warring parties in the country.

The move was in line with a peace deal signed to end a civil war that began in 2013.

The president dissolved parliament on Saturday and the new body will be formed in "a matter of time, not too long", his spokesman Ateny Wek Ateny told Reuters.

According to the deal that ended the civil war, parliament must be expanded from 400 members to 550 and must include members from all parties to the peace accord.

South Sudan won independence from Sudan in 2011 after decades of civil war. Violence erupted in late 2013 after Kiir, from the Dinka ethnic group, sacked vice president Riek Machar, a Nuer.

The two men have signed many deals to end a war estimated to have killed more than 400,000 people. They repeatedly pushed back deadlines to form a government of national unity, but in 2020 finally did so.

Despite the peace deal, violence is still raging in parts of the country, according to United Nations reports.