The Jamaica Public Service Company says it is investigating the cause of last evening’s island-wide blackout that left customers across the country without electricity.

President and CEO Hugh Grant says the outage occurred at approximately 9:02 p.m.

In a video update, Grant noted that significant lightning activity was recorded in the Corporate Area around the time of the disruption, particularly in the vicinity of several major generating stations, transmission facilities and substations.

He said power has already been substantially restored in some parishes while restoration efforts continue in others.