Tragedy struck Kano yesterday as about 10 people lost their lives as police clashed with Shiite Muslims as a religious procession.
Many marchers and five police officers were also injured, Police Commissioner Rabiu Yusuf said.
The group behind the procession, the Iran-backed Islamic Movement of Nigeria (IMN), has a history of tension with the security forces.
Last December troops killed 349 of its members during a crackdown.