Nairobi. Kenya’s top Christian, Hindu and Muslim clerics have led a multi-faith prayer service for the 67 victims of the Westgate shopping centre attack.President Uhuru Kenyatta told the gathering that religion had been used to try and divide Kenyans but faith had instead united them.There were plans to set up a commission of inquiry into the attack by Somalia’s al-Shabab Islamist militants, he said.Kenyan forces would remain in Somalia until order was restored, he said.On Monday, Kenyan MPs called for camps for Somali refugees in the country to close in the wake of the siege.Al-Shabab, a Somali Islamist group, said its militants stormed the mall on 21 September in retaliation for Kenya’s military involvement in Somalia. Kenya is host to the largest refugee camp in the world, Dadaab - home to about half a million people - near the Somali border, while it is believed that more than 30,000 Somali refugees live in Nairobi alone.The prayers were hosted by Kenya’s Inter-Religious Council with clerics from different faiths, who sat together on a stage facing the congregation, calling for national unity, reconciliation and healing.During the service in the capital, Nairobi, Bishop Gerry Kibarabara asked the congregation to stand, shake hands and say "peace”. The prayers were broadcast live on all national television stations, with private broadcaster NTV labelling the transmission "United in Prayer” along with the hashtag #WeAreOne, which some Kenyans have been using on social media in response to the attack.Adan Wachu, secretary general of the Supreme Council of Kenyan Muslims, said: "Islam is not terrorism and terrorism is not Islam. Islam is peace.”Another religious leader said that religion had been "misused” and the intention of the clerics on the Inter-Religious Council was to eliminate such "misconceptions”.President Kenyatta praised the clerics for organising the prayers, which showed that "tolerance and mutual understanding are the cement holding” Kenyans together.Faith "is one thing in 100 different languages, that’s why faith unites us”, he said. He ended the service by saying that if al-Shabab fighters thought the Westgate attack would make Kenya withdraw its troops from Somalia, they were mistaken."Let me remind them that… for over 20 years as Somalis fought Somalis, all Kenya did was to offer refuge to citizens who fled,” he said, mentioning Dadaab.