A spokesman for the Augsburg police headquarters said on Monday that all of the suspects have now been caught.
A 49-year-old professional firefighter had been killed on Friday evening in an argument with a group of young men at Königsplatz in the centre of Augsburg in Bavaria.
The man had been at the city’s Christmas market with his wife and a couple of friends, before dining in a nearby restaurant.
There the two couples met a group of seven young men with whom they got into an argument. One of the men hit the victim in the head, causing him to fall to the ground.
His 50-year-old companion was also beaten by the group and injured in the face. The two women were not attacked and remained unharmed.
Police at the scene of the crime on late Friday evening. Photo: DPA
The perpetrators then fled. Emergency doctors tried to resuscitate the man on site, but the 49-year-old died in the ambulance.
Investigators arrested the first two 17-year-old suspects on Sunday.
The video surveillance, which the police installed at Augsburg's Königsplatz in December 2018, helped with the search.
One 17-year-old suspect is a German who also has Turkish and Lebanese citizenship. The other 17-year-old is a native of Augsburg with Italian citizenship.
Investigators will announce further details of the case at a press conference on Monday afternoon, they said.
Over 100 firemen held a moment of silence for their colleague at the scene of the crime on Sunday, and also laid flowers and lit candles.
Bavarian Prime Minister Markus Söder also gave his condolences: “We are all shaken. All our sympathies go to the fireman's family.”
Surveillance ‘made the work of police much easier’
Interior Minister Joachim Herrmann (CSU) stressed the importance of video surveillance during arrests after the fatal attack.
“The images made the work of the police much easier”, the CSU politician told the Augsburger Allgemeine.
The video surveillance at Königsplatz, the central point for public transport in the city, was not put in place until December 2018 as part of a state programme, the newspaper reported.
The Augsburg surveillance cameras which had been installed a year earlier in December 2018. Photo: DPA
Since then, the police have been monitoring the area with 15 cameras.
“We have always pushed this, and such cases show that the demand has proven to be right,” Herrmann added.
It difficult for eyewitnesses to describe the perpetrators of a crime precisely, which is why video recordings are the most important for the investigation, he said.
However, Hermann said that video surveillance should be restricted. He said: “We don't want total surveillance, it only exists in authoritarian states.”
Instead, he said, the focus should be on trying to prevent “excessive violence” in public spaces in the first place.