One of the attacks occurred at dawn on Monday, setting off a gun battle with police, residents said. On Sunday night, gunmen stormed another police station near a bus station, leaving two civilians dead.
It was not immediately clear who was behind the violence, but Kano, the main northern city in Nigeria, has been targeted in recent weeks by attacks claimed by Islamist group Boko Haram.
The violence has included coordinated bombings and shootings on January 20 that left at least 185 people dead -- the worst attack yet attributed to the group in Africa`s most populous country.
Monday`s attack was the second in three days against the police station in the Mandawari neighbourhood, underlining the apparent inability of the authorities to halt the violence.
"It was crazy. These guys came on motorcycles and opened fire on the police station but they met tough resistance from the police, and it lasted around 20 minutes," Jamilu Muhammad, who lives across the Mandawari station, told AFP.
Kano state police commissioner Ibrahim Idris confirmed the raid but said the gunmen "could not get access to the station," and were "repelled by officers". He made no mention of casualties.
In Sunday`s attack, a large group of gunmen converged on a police station in the Naibawa district, sparking a shootout with police that lasted more than 30 minutes, residents said.
"Two civilians were shot dead in the attack on the Naibawa police station," Idris told AFP on Monday. (*)
Editor: Kunto Wibisono
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