Dozens of truck drivers in the country have died in attacks against foreigners since March 2018
An investigation into the building's owner had been opened
The pontiff will visit Mozambique and Madagascar, as well as Mauritius, countries visited by pope John Paul II in 1988 and 1999.
The toll is a setback coming a day before UN Secretary General Antonio Guterres visits for a first-hand assessment of the fightback
Three human rights groups issued a joint statement calling for an "independent and impartial investigation"
Photographs and videos shared on social media showed muddy waters carrying away people
Libya has long been a major transit route for migrants, especially from sub-Saharan Africa
An arbitration tribunal in London awarded the firm $6.6 billion (5.9 billion euros) in damages in January 2017
The worst hit area was White Nile state in the south
In January, the army attacked protesters marching against a hefty fuel price hike, leaving 17 dead over several days
Sign up to receive our free newsletter