Malaysian churches fire-bombed as 'Allah' row escalates
One church was badly damaged in the attacks
Three churches have been attacked in Malaysia's capital Kuala Lumpur, ahead of protests by Muslim groups.
The administrative offices of one church were destroyed by a firebomb attack and one of the other two churches attacked was slightly damaged.
Some Muslim groups are angry at a court decision allowing non-Muslims to use the word Allah to refer to God.
The government of the mainly Muslim nation has condemned the attacks on the churches and vowed to take action.
About 60% of Malaysians are Malay Muslims and the government relies on their vote.
There also significant Chinese and Indian minorities, who are mainly Christians, Hindus and Buddhists.
The controversy stems from a ban on a Catholic newspaper, The Herald, using the word Allah in its Malay-language edition.
The Kuala Lumpur High Court struck down the three-year old ban on non-Muslims using of the word Allah.
Some major Muslim organisations, including the Islamic political party, PAS, have agreed with the court, saying other Abrahamic religions - Christianity and Judiasm - may use the word.
But some vocal groups, including the Muslim Youth Movement, Abim, have cast the use of the word Allah as a surreptitious effort on the part of Christians to try to seduce Muslims away from Islam.
The government will take whatever steps it can to prevent such acts
Prime Minister Najib Razak
Church officials say that although the word Allah originated in Arabic, Malays have used it for centuries to refer generally to God, and Arabic-speaking Christians used it before Islam was founded, reports the BBC's religious affairs correspondent Robert Pigott.
The argument has continued in the media and the courts for months but had not become violent - until assailants on motorbikes were seen smashing the windows of the Metro Tabernacle Church, a Protestant church in Kuala Lumpur on Friday.
The ground floor office of the three-storey church was destroyed in a blaze a little after midnight, said Kevin Ang, a church spokesman.
Most of Malaysia's population is Muslim
Kuala Lumpur police Chief Mohamad Sabtu Osman said police had found a wrench, an empty petrol tin and two scorched motorbikes at the scene.
Separately, Molotov cocktails were thrown into the compounds of two other churches before dawn, causing minor damage in one and none in the other, church officials said.
Prime Minister Najib Razak condemned the attacks, saying such actions would "destroy our country's harmony".
"The government will take whatever steps it can to prevent such acts," he said.
There was tight security at all churches in Malaysia and at several mosques where protests against the court's ruling took place, says the BBC's Jennifer Pak in Kuala Lumpur.
Mass nationwide demonstrations failed to materialise on Friday, but protesters at mosques in Kuala Lumpur carried placards reading "Allah is only for us" and "Heresy arises from words wrongly used".
"I hope the court will understand the feeling of the majority Muslims of Malaysia," said Ahmad Johari, at the National Mosque.
"We can fight to the death over this issue," he told Associated Press news agency.
The government has appealed against the court verdict and the High Court has suspended the decision's implementation until the appeal is heard.
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