Event Director Mervyn Whyte said the competitor had sustained ‘some injuries’ but did not elaborate further.

A second rider was also involved in the incident.

The Superbike session was red-flagged and a delay of around 50 minutes ensued before practice resumed with the Supertwins machines going out on track.

The Supertwins session was also halted following a red flag.

Rain showers added to a frustrating first day on the North Coast, although more favourable weather is forecast for the remainder of race week.