Inter Milan got off to an inspiring start of 2012 as they thrashed Parma 5-0 at home in their Serie A clash, while Lazio snapped their unbeaten away record of the season with a 4-0 humiliation at the hands of Siena on Saturday.

Diego Milito scored a brace with Thiago Motta also on target as Inter scored their the fifth straight Serie A win.

Giampaolo Pazzini and Marco Faraoni struck after the break to seal an impressive win which sends the Nerazzurri to within three points of the top three ahead of tomorrow's remaining fixtures.

Inter head coach Claudio Ranieri praised his side as the best of his term.

"At the start the statistics were unavoidably bad, but now they are smiling at us. You can see these lads aren't finished and want to put this season back on track," Ranieri said.

"I think this was the best Inter performance of my time here, as we were very concentrated and interpreted the game well," he said.

Lazio made a bad start to the new year with a thumping at Siena, who picked up a much-needed win to take their coach Beppe Sannino out of the firing line.

Lazio had the chance to move into the top three with a win in the first Serie A fixture of the new year, but suffered a heavy defeat in which goalkeeper Albano Bizzarri was sent off.

Lazio head coach Edy Reja was left disappointed by his "worst Lazio".

"This evening we just weren't there," Reja said. "It was the worst performance in my entire Lazio career.

"I can only apologise to the Lazio fans and take full responsibility, because this is not the same team that played so well in the first part of the season," he said.

Mattia Destro scored the opening goal and earned one of two penalties, which were both converted by Emanuele Calaio, as the home side wrapped up the win within the first 45 minutes.

Destro then had the final word 10 minutes from time with his second and Siena's fourth.

The 10 men of Lazio could not find any energy to recover in the second half and will now turn their attention to avoiding another painful upset when they face Serie B high-flyers Hellas Verona in the Coppa Italia on Tuesday.