Sliced cold meat has been taken off the shelves at both stores

The outbreak, which caused the death of a 66-year-old woman and affected another seven people, had already been linked to two Morrisons supermarkets.

The meat came from Lonend and Falside Road stores in Paisley.

An inquiry found that the Lonend store also supplied meat for some pre-packed sandwiches.

Medical experts have said no new cases of E-coli O157 have been recorded.

Other cases

Morrisons is understood to have 12 meat suppliers which remain under investigation.

As part of its investigation, the Outbreak Control Team have been looking at other recent E-coli cases identified in both Scotland and England, although none have been linked to this outbreak.

The 66-year-old woman's husband is still seriously ill in hospital after contracting the infection.

Two others are receiving medical care, while the rest of those infected are recovering at home.

The Lonend store supplied meat for pre-packed sandwiches

The latest case involved a Paisley woman who took ill while on holiday in Ireland.

She had eaten cooked meat bought from the deli counter at Morrisons two weeks ago.

Officials have taken extensive samples and swabs from two stores in Paisley which have been sent to labs for analysis.

They are also interviewing all Morrisons staff who may have had contact with the two delicatessen counters where the meat was bought.

No other foods from Morrisons or elsewhere have been implicated in the outbreak so far.

Sliced cold meats have been withdrawn from sale at the deli counters at the two stores and people are being advised not to eat any meats that have been purchased.

NHS Greater Glasgow and Clyde are due to meet again on Thursday to review the situation.