Claimed sightings of a UFO over Rotorua have been posted on video-sharing website YouTube.

Someone who goes by the username Horsefarmer1000 posted the video on the popular website on June 5 and in the information attached claims the footage was taken about 9.30pm on June 2.

Rotorua Astronomical Society vice-president Brian Hurren says the video may be anything from an out-of-focus star to an unusual plasma ball.

The video, which is about 90 seconds long, has had more than 140 views and has attracted four "likes", one "dislike" and two comments.

To read the rest of the article and view the video, click here.