So that's it for today. Remember Friday is a day off in Monaco so we won't be back until Saturday morning at 09h00 GMT.

The drivers will complete the lap they are on and can then practice a start before heading back to the pits.

The flag is waved and practice finishes with Rosberg quickest ahead of Hamilton and Alonso.

One minute left in this session...

It's 1:19s for Hamilton on his set of soft tyres. Meanwhile, the McLaren mechanics are running down the pits as Perez has come to a halt.

A bit of traffic in the form of Marussia as Vergne and Webber come flying by. That's the fun part of Monaco, traffic!

Hamilton has pitted for a set of soft tyres for the final 11 minutes of practice.

Vettel reports to his team that he's beginning to lose rear grip with his worn Pirellis.

Alonso and Hamilton are both lapping on the supersofts and it appears as if the Ferrari has the better long distance pace of the two.

The STRs are the slowest established team at present with Ricciardo 16th ahead of Vergne.

Heavy fuel loads and old tyres all round as all the drivers are well off their previous best times.

Massa is back in the pits and Alonso is now out on track. He's currently third, 0.437s slower than Rosberg, who is out on track with a heavy fuel load and lapping about six seconds slower than his best.

Rosberg, Hamilton and Massa are out track along with Vergne, Bianchi, Pic and Chilton

Massa climbs to fourth place, half a second down on Rosberg's best.

Button's up to 12th and it's again looking like a sluggish weekend for McLaren.

Alonso almost brushes the barrier with the rear left tyre but thankfully does not crash out.

An unhappy Alonso comes up behind a tardy Sauber of Hulkenberg and has to take avoiding action.

The drivers are back out on track with the timesheet currently reading Rosberg 1:14.759. Hamilton is second and Alonso third.

The clock continues to count down as it does for any red in a practice session. Track workers have dealt with the kerb and it's "track clear".

And with that the session is red flagged for damage to the kerb at Turn 13.

Grosjean's car is lowered off the craned after being lifted up about 40ft in the air. Great view of the underneath of the car for all Lotus' rivals.

The yellow flags hurt Massa who was on his flying lap on the supersofts but had to slow right down. Waste of a good set of rubber for the Ferrari driver.

Double waved yellows at St Devote after Grosjean slapped the barrier with the front left of his Lotus. Game over for the Frenchman, who was fifth quickest.

Max Chilton is having a monster time out there and is slipping and sliding all over the place. Vettel heads into the pits with a KERS failure.

Rosberg is out on the red-ringed supersoft and immediately goes quickest with a 1:14.759. Charles Pic has a little spin but escapes without damage.

Well he took his time but Vettel is finally on a flying lap and he's down in the second sector by 0.5s. He crosses the line with a 1:16.014.

Raikkonen is also on the supersofts and is up through the first sector but down in the second. He does improve from 8th to sixth but is still 0.5s down.

Vergne has already made the swap to the supersoft tyres but is well off the pace, 1.5s down through the second sector.

Alonso is on a flier, up through the second sector and he does a 1:15.519 while Grosjean is 0.199s down.

As the times tumble its become a Mercedes 1-2 with Rosberg on a 1:15.843, a tenth up on Hamilton. Vettel, the only driver yet to go out, is climbing in his car.

The drivers are smacking them in at the moment taking into account that is the conditions (and the time of day) they could face at the start of Sunday's 78-lap grand prix. Grosjean is at the top of the timesheets at present with a 1:16.096.

14 times and Raikkonen is leading the way with a 1 :17.3. Perez is second ahead of Bottas.

Immediately into the work, Gutierrez posts a 1:24.8 but the times will drop dramatically from there before the end of the session.

The light goes green and second practice is underway with Gutierrez the first out ahead of his team-mate Hulkenberg.

Track temperature is up to 45'C in the build-up to second practice.

Five minutes to the start of practice.

Romain Grosjean was next in line after a late surge put him up to third, 0.185s down, while Felipe Massa was fourth ahead of Lewis Hamilton and Pastor Maldonado.

Nico Rosberg set the pace this morning as he lived up to expectations, beating Fernando Alonso by 0.087s. The German's best time was a 1:16.195.

Welcome back to Monte Carlo for Thursday's second practice. All times are local.