Racing at the the North West 200 has been delayed for a second time.

A security alert caused a 45-minute suspension of racing and an oil spill in the first Superbike race has caused a further delay.

Seeley was leading Michael Dunlop in the first Superbike race when an oil spill from Ryan Farquhar's machine led to it being halted after two laps.

The races were reduced from six to five laps because of the poor weather, with the riders having two 'sighting' laps before each race.

The paddock area was evacuated during the security alert after the Supersport race.

Conditions deteriated during the alert and led to pole position man Michael Rutter, team-mate Martin Jessopp and Guy Martin opting not to compete in the opening Superbike race, which was reduced to four laps.

Michael Dunlop took an early lead but he was soon joined by Seeley, who had moved ahead on the second lap when the oil spill led to the race being stopped.