Logistics firm Kuehne and Nagel in carbon monoxide probe

Kuehne and Nagel said six people were taken to hospital as a "precautionary measure"

A logistics company has confirmed it is investigating after six members of staff were taken to hospital with suspected carbon monoxide poisoning.

A further 33 people at the Kuehne and Nagel depot in Draycott-in-the-Clay, Staffordshire, were seen by paramedics.

Two men and two women were taken to hospital in Burton-upon-Trent, and a man and a woman taken to Royal Derby Hospital.

The firm said "they are not in immediate danger".

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West Midlands Ambulance Service said it was called to the site in Ashbourne shortly before 13:00 GMT on Monday after a woman reported feeling ill and it "quickly became apparent" she was suffering from the effects of carbon monoxide poisoning.

Ambulance officials said: "A number of other patients then began coming forward. Ambulance staff worked quickly to assess them all in order to establish the severity of their conditions."

A spokeswoman for Kuehne and Nagel said a "thorough investigation" is under way.

She added: "A number of people were given oxygen at the site and six were taken to hospital as a precautionary measure."