Justin Welby comments follow Pope Francis 's denunciation of the killings . David Cameron attributes his Easter remarks to brand killings ' truly shocking ' 148 Christian students at Garissa University college were slaughtered . Three suspects have been arrested on suspicion of involvement in the killings .
Justin Welby comments follow Pope Francis 's denunciation of the killings . David Cameron used his Easter message to brand killings 'truly shocking ' 148 Christian students at Garissa University College were slaughtered . Three people have been arrested on suspicion of involvement in the attack .