Rescuers were forced to briefly postpone their efforts as the after-shocks dislodged more rubble from buildings.
It remained a very difficult and dangerous job as rubble was still moving and houses could still collapse, says BBC correspondent Duncan Kennedy in Onna, a badly damaged village in the region.
As rescue efforts continued:
A 23-year-old student was pulled alive with the help of specialist cavers from the rubble of a four-storey building in L'Aquila more than 22 hours after the quake struck
One body was retrieved from a university dormitory at dawn on Tuesday, while rescuers continue to search for about four others believed trapped inside
L'Aquila and the surrounding area were without water
Latest from Duncan Kennedy in Onna, a village just outside L'Aquila
The search operation is still going on here. They are not giving up hope of finding people alive. It's a very difficult and dangerous job. We're not being allowed further because the rubble is still moving. The houses could still come down.
Even this morning, we felt tremors - that crack in the ground that you hear and the slight wobbling of the earth beneath your feet.
The long-term issue is at stake here. What are these people going to do in the days and the weeks and the months to come? They've got nowhere to live. Their homes are gone.
Survivors spent the night in hotels or at one of several tent camps which has been erected in the medieval hill city.
However, many preferred to sleep in their cars near their homes rather than to move to the camps.
At one tent city, volunteers handed out blankets, food and water to evacuees numbering 600.
Camp co-ordinator Paolo Diani said they were having to prioritise inadequate resources.
"As far as this first night is concerned, we gave shelter to elderly people and children, while we wait for more tents for everybody.
"And the tents will arrive tomorrow for all the population."
One charity said children would need help to recover from the trauma of the quake.
Save the Children's John Bugge said: "The children are showing signs of emotional stress - uncontrollable crying, fear of the dark."
"And these are all normal signs and we would expect that in children."
Many houses in L'Aquila have been reduced to rubble, and the streets are dotted with crushed cars.
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