Six passengers of a medical jet and one person on the ground were killed after the plane crashed in a Philadelphia neighborhood on Friday evening, officials said.Hospitals in the city report at least 20 victims have been treated for injuries from the crash,

Tens of thousands of people blockaded three bridges on the Danube River in Serbia's second city of Novi Sad on Saturday in the latest anti-government protest over a railway station disaster that killed 15 people in November.

A small medical jet carrying a child patient crashed in Philadelphia, sparking a massive explosion and a flurry of questions.