British police arrested three men on Saturday in connection with a fire at the offices of the publisher of a blasphemous book. The men, aged 22, 30 and 40, were arrested in north London under anti-terrorism legislation after the fire on Saturday morning at Gibson Square's offices. Police were also searching four addresses in east London. Britain's domestic Press Association news agency said some residents, whom it did not identify, reported that the incident may have involved a petrol bomb being pushed through the firm's letterbox. Gibson Square is responsible for the publication of 'The Jewel of Medina' by American author Sherry Jones. Random House announced last month it had cancelled publication of the book in the United States because of fears of violence. 'The Jewel of Medina' was re-released in Serbia earlier this month after being withdrawn in August under pressure from Islamic leaders. Gibson Square could not be immediately contacted for comment on Saturday's fire and subsequent arrests. The firm is known for having published other controversial books such as 'Blowing Up Russia' by former KGB agent turned Kremlin critic Alexander Litvinenko.