The Nigeria Football Federation has moved its upcoming World Cup and African Cup of Nation qualifiers over concerns about violence following increasingly bloody attacks by a radical Islamist sect.

The federation issued a statement Thursday saying matches scheduled in June against Namibia and Rwanda will be played at the U.J. Esuene Stadium in the city of Calabar, in the country's far southeast. The federation previously decided against playing the matches at the National Stadium in the capital of Abuja because the grass pitch hadn't been properly looked after.

The games were to be held in Kaduna, a central Nigeria city where an Easter suicide car bombing killed at least 41 people. Nigeria also faces increasing attacks from the radical Islamist sect known as Boko Haram.