NAIROBI: January 2, 2008. (Reuters) - A mob torched a Kenyan church on Tuesday, killing about 30 villagers cowering inside, as the death toll from ethnic riots triggered by President Mwai Kibaki`s disputed re-election approached 250. Fire engulfed a church near Eldoret town where hundreds of Kikuyu tribe had taken refuge. Witnesses said charred bodies, including women and children, were strewn about the smouldering ruins. "This is the first time in (Kenyan) history that any group has attacked a church. We never expected the savagery to go so far," police spokesman Eric Kiraithe said. Kibaki was sworn in on Sunday after official election results showed he narrowly beat opposition leader Raila Odinga. Both sides have accused the other of massive vote-rigging during the Dec. 27 election. The dispute ignited long-simmering tribal rivalries in one of Africa`s most stable democracies and strongest economies. World powers called for calm and urged the political opponents to "exercise restraint" and talk to each other. Police and a senior security official said the blaze at the Kenya Assemblies of God Pentecostal church in western Kenya was deliberately started by a gang of youths. Television pictures shot from a helicopter showed plumes of white smoke pouring from burning homesteads in the area. Young men, some toting bows and arrows, manned roadblocks.