Italian football authorities will meet on Monday to discuss measures aimed at tackling widespread fan violence sparked by the accidental shooting of a Lazio supporter by a police officer on Sunday.
He was he hit while sitting in a car as police tried to separate rival Lazio and Juventus supporters.
As news of Mr Sandri’s death emerged, angry fans took to the streets in several parts of Italy.
Riots hit Rome, with fans attacking a police barracks as well as the Olympic Stadium and the headquarters of the Italian Olympic Committee next door.
A Serie A game between Atalanta and Milan was abandoned after seven minutes when fans tried to break down a glass barrier keeping them from the pitch.
Police and the government are also set to hold talks to find out why the officer made such a “tragic error”.
The unnamed officer under investigation for firing the fatal shot claimed it had been an accident.
“I didn’t point it at anything, I didn’t aim at anybody,” he told Corriere della Sera.
“The first shot I fired into the air and the second left me while I was running. Now I have destroyed two families, the man’s and mine.”
Arezzo police chief Vincenzo Giacobbe told Italian media: “It was a tragic error.
“Our agent had intervened to prevent the brawl between these two groups, who had not been identified as fans.”
The incidents at the weekend were the first major outbreaks of violence since new security measures were introduced in the wake of the death of a policeman outside a match in Catania.
“It is another very sad and painful day for all of Italian football,” Italian football federation (FIGC) president Giancarlo Abete said in a statement.
“The first thought is of huge condolences for the family of Gabriele Sandri.”
Abete said he had convened a meeting for later on Monday with his board as well as representatives of the league, and player and coach associations.
They will discuss what to do about the Inter v Lazio and Roma v Cagliari matches, which were postponed on Sunday because of the shooting and whether to play the Atalanta game or award the points to Milan.
A report last month said injuries at stadiums caused by violence had dropped 80 percent since last season but Abete said that there was a limit to what the clubs could do to contain violence outside the stadium.
The clash between Lazio and Juventus fans that led to the accidental shooting happened at a motorway service station in the Tuscan city of Arezzo, many miles from the stadium.
Abete stressed that the shooting was very different from February’s death and that the response should be proportional.
“The loss of a life is always unacceptable but objectively the dynamics of the dramatic episode is totally different from the killing last February of inspector Raciti at Catania,” he said.