Lazio captain Ciro Immobile was furious with the celebrations of Roma's players after yesterday's derby defeat.
Roma fans celebrated the 1-0 win in front of the Curva Sud, with matchwinner Gianluca Mancini waving a large flag with the caption 'Anti Lazio'.
Mancini also waved another flag which depicted a rat in Lazio colours.
Immobile reacted: It was a bit chaotic at the end.
"These things happen in the derby, but there are ways of celebrating. Some do it with style, others lack it, but these are points of view."