In pictures: The search for survivors

Time is running out for rescuers in Turkey as they search for survivors from the country's worst ever earthquake.

Turkey has appealed for foreign assistance to help search for survivors. Some 10,000 people are missing.

Around 17,000 people are known to be injured.

A plane drops water on the Tupras oil refinery in Izmit, which has been on fire since the earthquake.

A woman is comforted by relatives as she embraces her dead husband at a hospital in Sakarya.

A young girl is carried to safety from a ruined home in Istanbul.

Hope is fading for those trapped under the debris of collapsed buildings.

Mountain rescue teams have been called in to help dig out survivors.

Much of the damage has been blamed on shoddy construction during a recent building boom.

The quake measured 7.4 on the Richter scale - higher than originally thought.

Aftershocks measuring up to five on the Richter scale were felt on Wednesday - more than 24 hours after the original quake.

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Story in pictures - click below for more:

• After the quake
• The search for survivors
• Three days on

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