MOSCOW, June 10 (RAPSI) - The police have arrested four individuals suspected of setting fire to Darul Uloom Islamic school in the outskirts of south-east London, BBC reports on Monday.

The fire started at an Islamic boarding school in Chislehurst late on Saturday night. The emergency services were called to the school just before midnight and all 128 students and staff were evacuated. Two boys were treated for smoke inhalation. It is estimated that around 10% of the building suffered damage.

The four teenage suspects (two aged 17 and two aged 18) were arrested on Sunday night. Their names have not been disclosed.

Police sources have so far refrained from speculating on the motives for the crime, but it is believed that the arson could have been linked to the murder of soldier Lee Rigby by Islamic extremists.

Rigby's killing two weeks ago has triggered an increase in attacks on Muslim centers, said Faith Matters, a group working to prevent extremism in the UK, Pakistan & Middle East. Eleven mosques have been vandalized during this period.

Rigby was murdered on May 22 in Woolwich in southeast London. The police immediately arrested two Britons of Nigerian descent who were telling passers-by that they killed Rigby for religious reasons.