The incident happened in northern Pakistan and it wasn't immediately clear what had caused the crash, but authorities suspect it was a technical fault. The helicopter was carrying 17 passengers.
Improving Pakistan's infrastructure will be the first step in creating a network of roads, railways, pipelines and shipping lanes that stretch all the way to Europe.
Mahmud ran the city's Second Floor cafe, which she designed as a community space for open dialogue. It had just hosted an event on the political situation in Pakistan's Balochistan province.
Lo Porto was kidnapped in January 2012 soon after he returned to work in Pakistan. President Obama announced Thursday that the Italian aid worker was inadvertently killed in January in a U.S. strike.
Two Americans who worked for al-Qaida were also killed in the counterterrorism operations in January, the White House said. The two hostages killed included an Italian who had been held since 2012.
The USAID contractor was kidnapped in 2011 from his home in Pakistan just days before he was scheduled to leave the country. He spent much of his career in some of the world's toughest places.
Up to $37 billion of that money will go toward the South Asian nation's electricity grid. But as NPR's Philip Reeves reports the challenge now is to make the projects happen.
In 1977, classical music virtually died in Pakistan when the government decried music and film. Seven musicians are working to bring the art back, and a film premiering Saturday documents their quest.