CONKLIN, Alta. -- A worker has been killed in an energy sector accident in northern Alberta.

Cenovus Energy Inc., says the accident happened late Tuesday night at its Christina Lake oil sands site, about 350 kilometres northeast of Edmonton.

The company says in a release that the death involved a hauling truck and occurred as a drilling rig was being moved.

The worker was employed by one of Cenovus's third-party contracting companies.

Officials have not released any other details, including the person's name.

Brett Harris, a Cenovus spokesman, says the drill rig site has been shut down for an investigation.