MOSCOW — One of the Moscow subway suicide bombers was the 17-year-old widow of a slain Islamist rebel from the North Caucasus, a leading Russian newspaper reported on Friday, according to The Associated Press.
Monday's bombings killed 39 people and injured about 90 in attacks that the security chief blamed on unnamed militants from the volatile southern region.
The Kommersant on Friday published a photograph of a young woman dressed in a black Muslim headscarf and holding a pistol. It names her as Dzhennet Abdurakhmanova from Dagestan.
Police in southern Russia confirmed to BBC News that they had given Moscow colleagues information about Abdurakhmanova.
A man with his arm around her in the picture is identified as Umalat Magomedov, whom the paper said was an Islamist militant leader killed by government forces in December.
The report, giving no sources, identified the second bomber as 20-year-old woman from Chechnya.
Abdurakhmanova is believed to be the bomber who attacked the Lubyanka metro station on Monday, killing 20 people, Kommersant reported, according to the BBC.
She came from Dagestan's Khasavyurt district, on the border with Chechnya, the police told the BBC.
It is thought she traveled to Moscow by bus with the other female suicide bomber, from Kizlyar, a town that is also near the Chechen border. Dagestan and nearby Chechnya have both been affected by militant violence.
The news that the attacks were carried out by women fuelled speculation that they were so-called "black widows," women or girls married or related to militants killed by Russian forces in Dagestan, Ingushetia and Chechnya, the BBC reported.
The Associated Press contributed to this report.