The security forces are conducting round the clock security operations since the attack in the crackdown on radical Muslims with links to the bombings. The Sri Lankan government had blocked social media services in the immediate aftermath of the Easter Sunday attacks.
The island nation has ramped up security as fears grow that minority Muslims among its population of 22 million could face sectarian violence after Islamist bombers blew themselves up in four hotels and three churches, killing more than 250 people. It was later extended to the entire North Western Province as violence continued to spread.
"Mobs had attacked him with sharp weapons at his carpentry workshop", the official said.
Sri Lanka's commanders of the three armed forces, however, said there was no risk of a terrorist attack taking place in the country on Monday.
Prime minister Ranil Wickremesinghe urged the public not to believe rumours and warned that civil unrest will stretch the already thinly deployed security forces. While the Muslim population of Sri Lanka is about seven percent, almost equal to the Christian population, authorities deported 200 foreign imams in the country this month for being in the country illegally after their visas expired, and another 600 people authorities believe could be terror threats are allegedly in the process of being expelled.
Since the bombings, Muslim groups say they have received dozens of complaints about people being harassed.
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"They destroyed and burned Qur'ans, broke every glass window and door and urinated on the water storage which Muslims used to take ablution", he said.
The police source said police also fired in the air the Hettipola area.
The police arrested the alleged author of the Facebook post, who was identified as Abdul Hameed Mohamed Hasmar.
Sri Lanka blocked access to Facebook and WhatsApp on Monday after a posting sparked anti-Muslim riots across several towns in the latest fallout from the Easter Sunday suicide attacks.
Nalaka Kaluwewa, the chief of the Information Department said the ban on social media was intended "to prevent misinformation from being circulated and also to prevent spreading of information that would harm communal harmony".