Manchester City has hit out at Liverpool, after he and his staff were spat on during Sunday’s 2-2 draw at Anfield.
The result took City into third place, behind the Reds in second.
Sadio Mane gave the hosts the lead, before Phil Foden slammed it for 1-1.
Kevin De Bruyne’s deflected goal in the 81st minute ensured City got a share of the points, after a sensational goal from Mohamed Salah.
But the match was marred by the spitting incident and Guardiola has told Liverpool to take decisive action against anyone found to have been involved.
“They [the staff] told me, but I didn’t see it.
“In every club there are people like this. Some can’t control their emotions.
“I am pretty sure Liverpool FC will take measures against this person. I know that Liverpool is greater than this behaviour.
“I am sure they will investigate it. Like when they smashed up our bus. It’s always a pleasure coming to Anfield,” Guardiola said.