A large lizard scampered onto the track and stopped the third and final Formula 1 practice session for the Singapore Grand Prix on Saturday.
The session was briefly red-flagged after Aston Martin driver Fernando Alonso reported over the radio that he'd seen the lizard in the middle of the track.
Two track marshals chased the long-tailed reptile and the session resumed shortly after.
Title challenger Lando Norris of McLaren set the fastest time, while standings leader Max Verstappen was fourth-fastest and reported his Red Bull car felt better than it had during a difficult second practice session the day before.
Qualifying for the Singapore Grand Prix is later Saturday and the race is Sunday.