A rafting guide has died following an incident on the Shotover River.

Police said the guide's raft overturned near Toilet Rapids this morning in Queenstown.

Five others were in the raft but were uninjured.

Emergency services were called to the scene at 11.24am

A police media spokesperson was unable to confirm the age, nationality or gender of the individual.

"There were five other people in the raft at the time and they were uninjured," police said.

Police said their thoughts were with the man's family.

The death had been referred to the Coroner.

In 2008, a Chinese tourist in her 40s was trapped under a jet boat after it flipped over on the Shotover River near Queenstown.

Queenstown Rafting had earlier told Newstalk ZB a guide had suffered a medical emergency, and had been flown to the Lakes District Hospital.