Aftershocks hamper Italy quake rescuers
Hundreds of aftershocks have rocked devastated areas of central Italy, hampering search efforts after a deadly earthquake.
A strong tremor with magnitude 4.3 struck on Thursday afternoon, sending rescuers fleeing from already fragile buildings.
About 5,000 rescue workers are combing through rubble for survivors using heavy machinery or bare hands.
At least 250 people are now known to have died after Wednesday's quake.
The 6.2-magnitude quake hit at 03:36 (01:36 GMT), 100km (65 miles) north-east of Rome in mountainous central Italy.
More than 300 people have been treated in hospital and dozens are believed to be trapped under rubble.
Worst affected are the towns of Amatrice, Arquata, Accumoli and Pescara del Tronto.
The towns are usually sparsely populated but have been swelled by tourists visiting for summer, making estimates for the precise number missing difficult.
At least three Britons died in the quake, a local official in Amatrice told the BBC.