Police are appealing for help in locating a man they believe may have "vital" information about a murder investigation.
Officers from Gwent Police want to speak to Paul Paget, 54, after they were called to an address in Brynderwen Road, in the Newport area of South Wales, at around 3.30pm on Monday where they found the body of a 57-year-old man.
Issuing the appeal on Tuesday, a spokeswoman for the force said the dead man's family had been notified and were being supported by specialist officers.
"The cause of death has yet to be established," she said.
"We are currently treating the death as suspicious and have now launched a murder investigation.
"As part of the investigation, officers are appealing for information to locate 54 -year-old Paul Paget, from the Newport area, who we believe may hold vital information into the investigation."
Mr Paget has been described as being white, 5´ 6´´ and of medium build.
He is believed to walk with a crutch following an injury to his left knee.
Anyone who thinks they know Mr Paget's location is asked to call 999, quoting log number 320 15/01/18.
Those with other information about the incident are asked to ring 101, quoting the same log number.