Curfew was imposed last night in few areas of the province, around 80 km north of Colombo to maintain peace as mob belonging to majority Sinhalese community targeted mosques and shops belonging to Muslims.
The curfew was removed this morning but was reimposed in the afternoon following attacks on few mosques and shops during the day.
Police later announced curfew for the whole province to control the deteriorating situation.
Social media sites were blocked for the third time since Easter attacks for preventing rumors to spread.
Hate crimes has been on the rise against Muslims following Easter Sunday attacks which killed over 250 people including 45 foreigners.
An area in Negombo faced similar attacks last week while several social media posts are in circulation calling for boycott of Muslim businesses.
Prime Minister Ranil Wickremsinghe in a message appealed for people to remain calm and not to be swayed by false information.
He said security forces are working tirelessly to ensure the security of the country but such civil unrest increase their burden and hamper ongoing investigations.