Image caption, Police and paramedics were called to Church Street, which is off Welshpool's main street, on Sunday at 01:15 BST
A 22-year-old has been arrested on suspicion of murder after the death of another man who was initially found injured on a street.
Dyfed-Powys Police said the man died "despite the best efforts of paramedics" called to Church Street, Welshpool, Powys, in the early hours.
"Our thoughts are with his family and loved ones," said the force.
"There will be an additional police presence in the area over the coming days as the investigation continues."
Another man remains in custody while investigations continue.
Church Street has been closed while officers carry out inquiries in the area.
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