(ENInews)–Some Christian groups in Nigeria are threatening to retaliate as churches continue to experience attacks attributed to Boko Haram, a violent Islamist group. Attacks on 10 June on two churches in the towns of Jos in Plateau State and Biu in Borno state killed at least five people and injured several others. “This act of bombing by Boko Haram is capable of causing another civil war and we are ready for it,” Anglican Bishop Emmanuel Chukwuma of Enugu told journalists on 11 June. [357 words, ENI-12-0338]