A scary situation in Singapore forced a mid-race caution as a fan walked on the track at the Marina Bay Street Circuit while cars zipped by him.

https://vine.co/v/ePmZP3gwlZa

The incident forced the safety car to come out for the second time in the race, and the leaders all decided to pit for the final time.

https://vine.co/v/ePmmz9uA6Ii

According to NBC Sports, the man, a 27-year-old, was arrested.

Additional footage of the incident revealed that the fan crossed the track seconds before leader Sebastian Vettel raced by.