Selangor state executive council member Dr Halimah Ali, who was also at the church, believes that the attacks were "well planned and seems like it is being orchestrated by a mastermind".

As such she called upon the federal government and the police to take stern measures to apprehend the perpetrators.

She urged Muslims to remain calm and to truly study the tenets of Islam, which she says does not allow for such violent behaviour.

Camera by Amir Abdulah
Editing by Indrani Kopal