ANKARA, Turkey - An earthquake struck eastern Turkey on Wednesday night, killing at least three people and leaving dozens trapped in the rubble of toppled buildings damaged in the previous temblor, which had killed 600 people.

An injured man gets help after an earthquake in Van, eastern Turkey, Nov 9, 2011. [Photo/Agencies]

About two-dozen buildings collapsed in the provincial capital of Van following a 5.7-magnitude quake, though most of them were empty or had been declared unfit because they were weakened by the earlier quake, according to media reports.

In a grim replay of scenes from last month's quake in the same region, men climbed onto piles of debris and frantically clawed at twisted steel and crumbled concrete in an attempt to find survivors.

Voices could be heard calling for help from under the debris, and at least 13 people were pulled alive from the rubble in early rescue efforts, according to Turkish media.

Rescue workers used the glare of high-powered lights to work through the night. There were several aftershocks.

A small fire broke out at a hospital but all patients were safely evacuated.

One of the buildings that collapsed was the Bayram Hotel, Van's oldest and best-known hotel. It was built in the 1970s and renovated last year. Some of the guests were journalists who were covering the aftermath of the 7.2-magnitude quake on Oct. 23, which left thousands homeless and led a number of countries to send tents, blankets and other supplies to assist Turkey in the aid effort.

Ozgur Gunes, a cameraman for Turkey's Cihan news agency, told Haber Turk television that some trapped journalists had sent text messages to colleagues asking to be rescued.

He had left the hotel before the quake, but rushed back to collect his camera after it struck, only to find that the building toppled.

"There was dust everywhere and the hotel was flattened," he said. He told Sky Turk television that the building had some small cracks before the quake, but that he and other guests were told that there was no structural damage.

State-run TRT television said at least three bodies were recovered and, citing a hotel worker, reported that 35-40 people were believed to be trapped in the rubble of the Bayram Hotel.

Mustafa Bilici, a ruling party lawmaker, said one person died after throwing himself out of a building in panic.

Deputy Prime Minister Besir Atalay said the quake toppled a hotel, a school and a number of mudbrick homes. He said rescue teams are being sent to the region from the capital, Ankara, and other areas. Workers have been clearing debris from the previous disaster for more than a week.

Schools in the region are closed until Dec 5.

The Turkish Red Crescent immediately dispatched 15,000 tents and some 300 rescue workers, TRT said. There was no damage in the town of Edremit, the quake's epicenter.

The US Geological Survey said the earthquake measured 5.7 and that its epicenter was 16 kilometers (9 miles) south of Van. It struck at 9:23 pm (1923 GMT, 2:23 pm EST).

About 1,400 aftershocks have rocked the region since the massive earthquake on Oct 23, which killed 600 and left thousands homeless. Many residents had been living in tents, despite the cold, too afraid to return to their homes. At least 2,000 buildings were destroyed in the stronger temblor and authorities declared another 3,700 buildings unfit for living.