Pakistan orders troops in after days of unrest

KARACHI, Pakistan - Pakistan on Friday ordered 1,000 extra troops to deploy in Karachi with instructions to shoot-to-kill after up to 70 people were killed in the deadliest six months of political violence since 1995.

Gunfire reverberated in several neighborhoods and thousands of people were stranded, short of food and too frightened to go out after three consecutive nights of violence in what is Pakistan's biggest city and economic hub.

The US ambassador to Pakistan voiced concern about escalating instability in the city, whose Arabian Sea port is used by the United States to ship supplies to the 150,000 foreign troops fighting the Taliban in Afghanistan.