Updated April 12, 2017 13:17:53

Photo: Tyson Clark-Robertson was last seen at a Newnham supermarket. (Supplied: Tasmania Police)

Map: Mayfield 7248

Human remains found at a house in Launceston may be those of a man who has been missing for nearly 10 months, Tasmanian police say.

Tyson Timothy Clark-Robertson, 24, was last seen leaving a Newnham supermarket in July but was only reported missing last month.

Forensic officers discovered remains during a property search in Mitchell Street in Mayfield on Tuesday night.

A 45-year-old man, a 53-year-old man and a 19-year-old woman are in custody and assisting police with their enquiries.

Police believe Mr Clark-Robertson may have met with foul play.

A tent has been set up in the property's backyard.

A woman who lives nearby said a foul smell came from the property after police started working in the yard.

"They were digging last night and I heard them mention that they had found a body," she said.

Photo: Forensic officers have been brought in for the search at the Mayfield property. (ABC News)

Topics: missing-person, crime, mayfield-7248

First posted April 12, 2017 11:34:54