The Central African country’s incumbent president and his prime minister both ran. Shortly after the prime minister claimed victory, the president was declared the winner.

The authorities in Senegal said the incident involving the aircraft, a Boeing 737 that was flying to Mali, was under investigation.

Three days after the collapse of a four-story building that was under construction, rescuers were still combing through some 3,000 tons of concrete rubble even as signs of life faded.