The government of Roraima state said the situation at the Agricola de Monte Cristo Penitentiary was now "under control."
The latest violence did not appear to be an all-out riot but rather a rapid early morning attack by one group of inmates against another, lasting less than an hour, a local government spokeswoman told AFP.
Most of the killings were carried out with knives, she said. No firearms have been found inside the prison so far.
Rights activists have long condemned prison conditions in Brazil, where the justice ministry says 50 per cent more capacity is needed to handle an inmate population swollen by efforts to crack down on a violent and lucrative drug trade.
The latest unrest comes a day after President Michel Temer said the federal government would spend USD 250 million to build at least one new prison in each of Brazil's 26 states.
The announcement came in response to a grisly riot in Manaus, the capital of Amazonas state, where jailed gang members beheaded and mutilated 56 of their rivals in a 17-hour bloodbath Sunday and Monday.
But Brazil's prisons are often scenes of deadly unrest.
In October, riots at several prisons triggered by fighting between rival gangs killed 18 people, including 10 at Agricola de Monte Cristo.
At the time, the prison held 1,400 inmates -- double its capacity.
The prison holds inmates from the Red Command, a powerful drug gang based in Rio de Janeiro.
It is allied with a local gang called the Family of the North, which authorities say was responsible for the riot in Manaus.
The riot also enabled 184 inmates to escape.
The states of northern Brazil, which border top cocaine producers Bolivia, Colombia and Peru, are battle zones in the drug trade.
Prisons are often controlled in Brazil by drug gangs, whose turf wars on the outside are also fought out among inmates. Overcrowding exacerbates the problem, activists say.
Brazil's jails hold 622,000 inmates, mostly young black men, according to a 2014 justice ministry report.
Disclaimer: No Business Standard Journalist was involved in creation of this content
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
