Militant Islamist group Boko Haram has claimed responsibility for a suicide bombing on a procession of Shi'ite Muslims that killed at least 21 people in northern Nigeria's Kano state, the SITE monitoring service reported on Saturday.
Friday's attack near the village of Dakozoye took place a week after two female bombers blew themselves up at a mobile phone market in Kano, killing at least 14 people and wounding more than 100.
Jihad monitoring service SITE Intelligence said Boko Haram -- which rarely claims responsibility for attacks -- had named the bomber in a message on Twitter.
"When our brother reached his target, he detonated his explosive belt amidst their gathering," SITE quoted the message as saying. Reuters could not immediately verify the statement or the authenticity of the Twitter account.