McLaren's Fernando Alonso's had a rocky start to pre-season testing, finding himself stranded in the gravel trap just six laps into the days' first session.
Alonso was on course to set the fastest lap of the day when the incident occurred, triggering the sessions' first red flag in the process.
Footage showed the McLaren heading into the final corner as the rear right wheel came loose, pitching car and driver in the kitty litter.
The MCL33 was hauled back to the McLaren garage where a thorough inspection revealed a wheel nut issue, according to Zak Brown.
"We had a wheel nut issue. We'll get back out here this afternoon," Brown said.
"I know Eric [Boullier, McLaren racing director] will be doing a debrief later today with all of today's activities, so I'll leave him to tell you about today.
"It's what testing is for. I think all teams will have a variety of issues throughout testing. That's exactly what it's for.
"We're going to lose very little time. It's no big deal at all."
Following repairs, McLaren was prepared to resume running with Alonso shortly before the lunch break.
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
While the paddock has been whispering for months that Mercedes might be holding the winning…
Dan Gurney passed away on this day in 2018, and here at F1i we'll never…
What began as a painful reminder of loss has ended with a moment of profound…
Yuki Tsunoda’s Formula 1 story was supposed to have reached a holding pattern by now…
When Ford announced its return to the pinnacle of motorsport alongside Red Bull in 2022,…
Once a fleeting name on the Formula 1 grid, former Williams driver Antonio Pizzonia has…