Fifty police were called in to contain the mass brawl, which broke out in an argument in a shower block, local newspaper the Morgenpost reported.
The two groups attacked each other with iron bars and furniture and by hurling rocks, reported the daily and DPA news agency, citing emergency personnel in the northern port city.
The initial fight involved a 16-year-old Afghan and two Syrians aged 16 and 18, who were injured, along with a 53-year-old security guard, police said.
Hamburg police were also called to another centre where rival groups faced off, armed with wooden poles and broomsticks, after a 19-year-old migrant accused a 23-year-old Iraqi of having stolen his mobile phone.
Police arrived with 15 patrol cars, defused the tensions and briefly detained the Iraqi and four others.
Germany is Europe's top destination for people fleeing war and misery and expects up to one million newcomers this year.
Aid workers warn that tensions easily flare as often traumatised refugees, many of them men, share crowded spaces while lacking common languages to defuse everyday conflicts.
In earlier disturbances in Germany this week, 14 people were injured Sunday in a centre in the central city of Kassel when 70 Pakistanis clashed with 300 Albanians.
On Tuesday, dozens of Syrians and Pakistanis came to blows in a refugee shelter in the eastern city of Dresden.
According to southern Bavaria state, the main entry point for migrants to Germany, up to 280,000 asylum seekers arrived in Germany in September alone, topping last year's total.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
