Lazio striker Goran Pandev accused Roma's players of spoiling for a fight after their 4-2 win.
"It's a shame to see the tension that dominated this game, as we were both fired up and wanted to win, but that's the derby for you," said Pandev.
"The Roma players were spoiling for a fight and tried to turn it into a brawl. Perhaps it's because they were so annoyed and bitter at the match they were losing."