A 21-year-old football fan was killed and seven others were injured in a clash between Argentine fans in Bhola Sadar upazila on Tuesday night.
The deceased was identified as Md Hridoy from Dhania union of the upazila.
The injured identified as Md Nayon, 17, Abdullah, 24, Mohiuddin, 23, Liton, 22, Sahabuddin, 20, Md Ashiq, 20, and Talha, 20, are now undergoing treatment at Bhola Sadar Hospital.
A fight between some supporters of Argentina took place in the Dhaniya union over a food party surrounding Argentina's match against Australia Sunday, locals said.
Supporters of the Latin American team again got into a brawl over the issue around 11pm on Tuesday, leaving eight people injured.
Of them, Hridoy was rushed to the hospital in critical condition. He succumbed to his injuries early Wednesday.
Md Shaheen Fakir, officer-in-charge of Bhola Police Station, said they arrested two people over the incident Wednesday and efforts are on to arrest others. Earlier, a case was filed following the incident, he added.
Bangladesh is known as a cricket-loving nation, but a passion for the Argentina and Brazil football teams sweeps the country ahead of and during the World Cup. The flags of Argentina and Brazil fly everywhere.
The World Cup is now taking a small break after non-stop football for the past two weeks. There will be two days of rest before the quarterfinals start in Qatar on December 9. Argentina beat Australia to get into the last eight. Brazil, which had Neymar back in the lineup after an ankle injury, is there as well, after a 4-1 win over South Korea.