The 14 Tesco stores across Britain which were closed by police on Saturday afternoon following a series of threats, are to reopen for normal Sunday trading.
The Britain's biggest retailer is believed to have lost millions of pounds in sales on Saturday when they were forced to be closed as a precaution measure, Sky news reported on Sunday.
One store in southwest London reopened on Saturday evening and Tesco said all the others would be open again by Sunday morning, the report said.
Police have launched a criminal investigation but found no links to extremism. There seems to be a possible financial motive behind the threats, said the report.
A police spokeswoman in Herefordshire where the chain store is headquartered advised the public to remain vigilant.