Founder and chief editor of Lanka-e-News Sandaruwan Senadheera is now facing contempt of court charges for stories carried on the website.
He is currently believed to be in the UK in exile, having left the country during the regime of former President Mahinda Rajapaksa.
The office from which he was running the website was set on fire during that time.
The warrant came after petitions were filed against him this week.
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