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Nigeria: Polio shootings in Kano 'kill 12' Nigeria polio vaccinators shot dead in Kano
(35 minutes later)
Twelve people, including polio vaccinators, have been killed in two shootings at health centres in northern Nigeria, witnesses have told the BBC. Nine female polio vaccinators have been killed in two shootings at health centres in northern Nigeria, police have told the BBC.
In the first attack in Kano four polio vaccinators were shot dead by gunmen who drove up on a motor tricycle. In the first attack in Kano the polio vaccinators were shot dead by gunmen who drove up on a motor tricycle.
Thirty minutes later gunmen opened fire on women waiting with their children in Hotoro, outside Kano city. Thirty minutes later gunmen targeted a clinic outside Kano city as the vaccinators prepared to start work.
In 2003, northern Nigeria's Muslim leaders opposed polio vaccinations, claiming they could cause infertility. Some Nigerian Muslim leaders have previously opposed polio vaccinations, claiming they could cause infertility.
On Thursday, a controversial Islamic cleric spoke out against the polio vaccination campaign, telling people that new cases of polio were caused by contaminated medicine.
Some Kano residents told the BBC's Yusuf Yakasai in the city that those injured in the first attack had been taken to hospital.
A health official confirmed to the BBC that those killed in the second attack in Hotoro were female health workers - there were earlier reports that people waiting at the clinic had been among those shot.
Witnesses in Hotoro told the BBC gunmen also approached the health centre using a motor tricycle.
Kano banned motorbikes from carrying passengers after a recent attack on the prominent Muslim leader, the emir of Kano.Kano banned motorbikes from carrying passengers after a recent attack on the prominent Muslim leader, the emir of Kano.
Residents told the BBC's Yusuf Yakasai in Kano that those injured in the shooting at the health centre there had been taken to hospital. Analysts believe the attacks may have been the work of the militant Islamist group Boko Haram but it has not yet commented.
It is not clear if health workers were among the casualties in Hotoro, where gunmen also approached using a motor tricycle.
Analysts believe the attack last month on the emir of Kano may have been the work of the militant Islamist group Boko Haram.
The group - whose name translates as "Western education is forbidden" - says it is fighting to overthrow the government and impose Sharia.The group - whose name translates as "Western education is forbidden" - says it is fighting to overthrow the government and impose Sharia.
It has been blamed for the deaths of some 1,400 people in central and northern Nigeria since 2010.It has been blamed for the deaths of some 1,400 people in central and northern Nigeria since 2010.
Nigeria is one of only three countries where polio is still endemic. Along with Afghanistan and Pakistan, Nigeria is one of only three countries where polio is still endemic.
In the past month, polio workers have also been targeted and killed in Pakistan, where the Taliban have threatened anti-polio efforts - accusing health workers of working as US spies and alleging that the vaccine makes children sterile.