Merseyside Police reported that multiple people were hurt in the celebrations and that fireworks were aimed at the city’s iconic Liver Building, causing a small fire, with police involved in a number of violent confrontations.
Thousands had also gathered outside Anfield stadium on Thursday after Liverpool were confirmed champions of England.
“I am a human being and your passion is also my passion but right now the most important thing is that we do not have these kind of public gatherings,” Klopp wrote.
“We owe it to the most vulnerable in our community, to the health workers who have given so much and whom we have applauded and to the police and local authorities who help us as a club not to do this.
“Please — celebrate — but celebrate in a safe way and in private settings, whereby we do not risk spreading this awful disease further in our community.”
‘Please stay at home’
Over the weekend, the mayor of Liverpool Joe Anderson reiterated his plea for fans not to gather and said he had been left frustrated by those ignoring warnings from the club, health experts and the authorities.
“I say what I say in sorrow, rather than in anger, because people’s lives, your lives, their lives, are put at risk.”
The club has repeatedly told supporters to not gather outside stadiums before, during or after the remaining fixtures.
Liverpool faces Manchester City in the Premier League Thursday before returning to Anfield to play Aston Villa on Sunday.
Klopp promised fans that they would have the chance to celebrate with the team one day, but only when it was safe to do so.
“When the time is right we will celebrate. We will enjoy this moment and we will paint the city red. But for now, please stay at home as much as possible,” he continued.
“This is not the time to be in the city center in big numbers or to go near football grounds.”
He added: “I already knew and liked the German word solidarität before I came to Liverpool and now I have learned that the English word is solidarity because I have heard it used by our supporters during the last few months.
“For me, it is the word more than any other that captures what Liverpool people are about. It is why they have come together to make PPE, it is why they have delivered food parcels and medicines to people when they have needed it most and it is why they come together in so many different ways during such a difficult time.”