A car packed with explosives blew up in central Maputo, the capital of Mozambique, injuring 50 people, officials said. Two other explosions were reported in Maputo’s suburbs. The Mozambique National Resistance claimed responsibility for the blasts, saying it was part of a new strategy of attacking major cities. The right-wing group, backed by the South African government, is demanding new general elections and power sharing. It has wreaked havoc on the country’s economy, and hundreds have been killed in its 10-year campaign.