(Bloomberg) -- Norway has established a taskforce to investigate why 102 elderly people died after being vaccinated.

The deceased had an average age of 87, and many were already “ill and extremely frail,” the Norwegian Medicines Agency said on Tuesday.

Still, a more thorough review is needed as “it is impossible to rule out the possibility that common adverse reactions to vaccines, such as fever and nausea, may have aggravated the underlying conditions of extremely frail patients,” it said.

The expert group will provide an independent assessment of whether the deaths may have been connected to the vaccination program, which covered 40,000 care home residents in total.

The findings are due to be presented before Easter, the agency said.

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