Police have warned against revenge attacks after a Saudi Arabian woman was stabbed to death on a footpath in Colchester.
Student Nahid Almanea, 31, died after she was stabbed 16 times on Tuesday morning, Essex Police said.
Essex Police called for calm, saying they were aware threats of revenge attacks had been made on social media sites.
More top news
The friends of a Czech businessman who was beaten to death raise £10,000 in a day to send body of 'great man with a big heart' back home
The Olympians rounded off their success in Rio with a personal triumph as they confirmed they have tied the knot.
The foreign secretary called for tougher action against Russia in an effort to halt the "barbaric" attacks on rebel-held Aleppo.