Names of suicide bombers in Dagestan revealed.

A brother and sister are believed to have carried out dual suicide bombings in Dagestan that killed at least 13 people and injured more than a hundred.

"The names of the suicide bombers have been preliminarily established. They are the brother and sister Rizvan and Muslimat Aliyev," Magomedsalam Magomedov told the parliament, according to ITAR-TASS news agency, confirming reports.

"The special services who are investigating this case will give detailed information on the terrorists and their accomplices shortly," Magomedov was also quoted as saying by his press service.

Investigators were still in the process of identifying human remains at the scene of the two blasts as the region held a day of mourning for the victims on Saturday.