Two men died suddenly in the Pembroke Dock area over the weekend.
The men were found dead at seperate addresses on Saturday morning.
A Dyfed-Powys Police spokesman told the Western Telegraph: “Dyfed-Powys Police is investigating the sudden deaths of a 40 year-old man and a 36 year-old man in the Pembroke Dock area.
"Both were found in their respective addresses on Saturday morning, March 21 2015.
"HM Coroner has been informed.”
A further man is understood to have been taken to hospital.
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