F1 Monaco GP live commentary and updates - Race

FIA confirms race will restart at 17:15 local. "Temporary repairs have been completed." Polyfilla?

At this rate it will be quicker to list the drivers who haven't been penalised...

Hamilton now under investigation for a safety car infringement.

Our colleagues down in the media 'pen' say Stroll insists the crash was caused by engine 'push' rather than the track break-up.

Leclerc echoing that too - he's very agitated, as you might expect, but has seen replays of the incident and still says it felt more like engine 'push'.

F1 TV showing a replay of Russell reporting Hadjar as being more than the maximum 10 car lengths in front during that safety car period, after the lapped cars had been given the all-clear to unlap themselves.

Our colleagues on site relaying that Alpine suspects there is a technical issue behind the pitlane penalties.

No official word yet on when the race will resume.

Drive-through penalty for Russell, which will be disastrous for his race given how compressed the field will be after the restart.

We've had a look on the in-car footage from both cars which went into the barrier and it seems conclusive. Both scooped up detritus on the front-left wheel preceding the axle locking.

Interesting to hear both drivers initially complaining of the engine 'pushing' under braking, which has been a recurring motif this weekend.

Looks like Hadjar is being investigated for a 'safety car infringement'.

Let's take advantage of this stoppage to catch up with the comments.

'Has Hamilton served his penalty?' asks Lotus109. We believe he did, hence the lengthy double-stack for Leclerc. In any case, he's not under investigation at the moment.

'Forgive me,' asks chinesegeorge, 'what's a WKD?'

That question kindly answered by another reader, which leaves me only to suggest that you look up 'Cheeky Vimto' on Google and prepare one (if you have the ingredients available) in preparation for more celebrity footage if this stoppage continues for much longer.

Mind you, to be frank most of them bog off before the race begins anyway. That's where Kym Illman paps them, as they head for the exit.

F1 TV showing the track inspection in progress. There is what's best described as a long crater in the track surface on the outside of that corner, surrounded by detritus which comprises chunks of degraded asphalt as well as tyre 'marbles'.

They're cleaning that detritus away but that doesn't solve the problem of the crater.

Presumably on Sky TV, Martin Brundle will be choosing his words carefully apropos the resurfacing process...

Yes, FIA confirms the red flag is for a track inspection at Turn 19.

And a 5s penalty for Pierre Gasly.

Russell under investigation for not serving his penalty correctly.

Leclerc back in the garage and not a happy bunny at all. No surprise there - those front wheels just locked completely on the way into the corner, skating over the marbles.

Gasly now under investigation for pitlane speeding again.

Russell, of course, one of the lapped cars being allowed to unlap themselves. He's querying on the radio whether he has served his penalty or not. "We'll relay the messages as they come," says race engineer Marcus Dudley.

So it's Antonelli, Hamilton, Leclerc, Hadjar, Russell, Gasly, Piastri, Lawson, Lindblad and Albon.

So this has worked out very nicely for Racing Bulls. Piastri lost just one place by serving that penalty.

Lapped cars being allowed to pass the safety car so we're not far away from restarting - lap 64 of 78.

All the frontrunners on used softs apart from Hadjar in P4, who only had a used set of hards to play with. Ditto Gasly.

Busy evening for the stewards, then.

Yes, replays showing that was the case.

In all that flurry, we note that Russell didn't serve his penalty during that stop.

Leclerc continuing to fulminate over the radio.

Antonelli into the pits! Left rear is slow to change. Russell, Lindblad, Albon and Sainz in, plus Ocon, Colapinto...

It's a double stack for Ferrari. "Why the hell are we pitting?" harrumphs Leclerc. 

Safety car restart, Charles. Softs versus elderly hards. Do we need to spell it out?

Hulkenberg and Alonso too.

Hamilton, Leclerc and Piastri into the pits.

Replays show Leclerc dinging his front-left wheel rim against the barrier at the chicane exit. Mind how you go!

And, lo, the Williams drivers swap on lap 59. Albon back into P10. He's now 5s behind Lindblad but the VCARB hasn't visited the pitlane yet.

In any case, Antonelli has now lapped Russell.

Antonelli just did a purple sector two and Peter Bonnington was straight on the radio to remind him that there are no points for fastest lap these days.

Antonelli now 26.5s ahead of Hamilton and his last lap was a second faster, so nothing seriously wrong with that car. Radio message advises him the issue was just a de-rate, and nothing of consequence.

"There's something weird with the engine up the hill" says Antonelli.

Replay shows Russell putting his left-front on the white line at the pit exit as Piastri is confirmed as a 5s penalty.

That's Numberwang!