Nearly 16,000 people are now known to have died after Monday's earthquakes in southern Turkey and northern Syria till Thursday.
Officials and medics said 12,873 people had died in Turkey and 2,992 in Syria from Monday's 7.8-magnitude tremor, bringing the confirmed total to 15,865.
The World Health Organization fears many survivors could yet lose their lives without shelter, water, fuel or electricity.
It says there's a danger there will be a secondary disaster which may cause harm to more people than the initial quake, reports BBC.
Rescuers are continuing their painstaking work but hopes are fading for the many still trapped under the rubble.
Dozens of British charities will launch an appeal later to raise funds for people affected.
Turkey says it hopes to open two more border crossings into Syria to enable the delivery of much-needed supplies there.
Bd-pratidin English/Golam Rosul
