The government declared a state of emergency for ten days and blocked access to social media as 11 mosques were torched and 200 Muslim-owned businesses destroyed in riots by Sinhalese mobs that left at least three people dead and around 20 wounded.
Afghanistan will join fellow qualifiers West Indies in the 10-team World Cup to be staged in England and Wales next year.
Over 300 people have been arrested in connection with the riots in the central district of Kandy in the first state of emergency imposed in Sri Lanka since the end of a decades-long Tamil separatist war in 2009.
A recent wave of violence has sent the tropical nation into a tailspin as Sri Lanka continues to struggle with post-war reconciliation.
The riot victims say the Sri Lankan government is not doing enough to counter anti-Muslim groups that are acting with impunity across the country.
Police are investigating whether ringleaders had out outside help, but as they do, Sri Lanka's Muslim community count the cost and fear more violence.
Sri Lanka's Kandy district had been rocked by communal clashes since Sunday, following attacks on members of the minority Muslim community by nationalist crowds from the Sinhalese majority. At least two people were killed.
Buddhist mobs sweep through Muslim neighbourhoods in the country's central hills, destroying stores and setting homes on fire despite a curfew and a state of emergency.
Police also ordered a curfew across much of central Sri Lanka for a third straight day, trying to calm the situation.
The Sri Lankan government has imposed a state of emergency after anti-Muslim riots have spread in parts of the country. Tensions have been brewing for months, so why has the government been slow to act?
President Maithripala Sirisena made the decision amid fears that anti-Muslim attacks in a central Sri Lankan hill town could spread.
Police had been placed on alert in the central hill station town following unrest that saw a man killed and Muslim businesses set alight.
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