Two dead in suspected murder-suicide on Groote Eylandt: NT Police

The deaths of two people on a Northern Territory island is being treated as suspicious, police say.

Two bodies were found in a house on Groote Eylandt by a member of the public in the early hours of Sunday morning.

A police spokesman said one of the bodies "was in a bad way", but would not give further details.

NT Police said they believed it may be a murder-suicide.

In a statement, Detective Sergeant Tony Henrys from the NT Major Crime Squad said police from Groote Eylandt responded after a member of the public found the bodies.

"Upon arrival police gained entry into the residence and a male and female were confirmed deceased," he said.

"A crime scene has been established and investigations into the deaths are ongoing."

Groote Eylandt is located about 640 kilometres east of Darwin.