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(CNN) -- Yemen says the al Qaeda terrorist organization was behind a suicide bombing Sunday that killed four South Korean tourists, according to the Daily Yemen Post.
The explosion Sunday evening in the city of Shibam also wounded three other tourists, said Hakim Almasmari, editor in chief of the English-language newspaper.
Almasmari told CNN on Monday that Yemen's Interior Ministry is blaming al Qaeda.
CNN could not immediately reach the Yemeni government for confirmation.
The bomb was very strong and could be heard some 2½ miles (4 kilometers) away from the site, in the Al-Qubah district of Shibam, which is in Hadramot province, Almasmari said.
The nationalities of the three injured people were not immediately known.
The tourists were taking pictures of Shibam at sunset, Almasmari said. The old walled city is a United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Site; sunset is the best time to take pictures of it, he said.
All About Yemen • Al Qaeda • South Korea
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