They are neither aliens trying to land in Fiji in unidentified flying objects nor a meteorological event.
The Fiji Meteorological Office confirms that the lights that the people in Nadi have seen on Tuesday and last night are flares fired by the Republic of Fiji Military Forces Black Rock Camp.
The Weather Office says that has been confirmed by their tower.
Many people on social media have been raising concerns about the lights in the sky.
RFMF Commander, Major General Jone Kalouniwai says the flares are part of the pre-deployment training for their troops earmarked for their Syrian deployment.
The flares will be used again at around 5am tomorrow.
He says the Civil Aviation Authority of Fiji and other relevant authorities have been notified accordingly.
