(BBC) Nigeria violence: Seven dead after Boko Haram attacks

Boko Haram militants have attacked two churches during Sunday services, triggering deadly reprisal attacks.

In the central city of Jos, a suicide bomber blew himself up outside a church, wounding at least 50 people.

In a separate attack, gunmen opened fire during a service in Biu in northeastern Borno state, leaving at least one person dead.

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