A fire on Friday left 10 people dead at Flamengo’s training centre in Rio de Janeiro.
Firefighters were called at 5:17 a.m. local time to control the blaze that had started at the sleeping quarters of Flamengo’s youth camp.
Six of the people who died are teenagers between 14 and 17 years old. The other four victims are employees of the club.
Goalkeeper Christian Esmério, 15, has been confirmed as one of the dead.
According to the Rio de Janeiro fire department, one person among several wounded is in serious condition.
The blaze happened at the Brazilian club’s state-of-the-art centre that was expanded only two months ago.
There is still no official information about what caused the fire.
Aerial imagery filmed by RecordTV and Globo broadcasters shows a red-black area destroyed by flames. The fire was reportedly controlled around 7:20 a.m.
The club have posted a message on its Twitter feed that says: “Flamengo is in mourning.”
This is the second tragedy to hit Rio de Janeiro in the past 48 hours after at least six people died following a storm which caused floods and mudslides on Wednesday night.
Rio de Janeiro’s governor, Wilson Witzel, has declared three days of mourning for the deaths of those affected by the floods and the fire.
Real Madrid forward Vinicius Junior, who trained at the centre while being a part of Flamengo’s youth academy before moving to Spain, tweeted: “What sad news! Let’s pray for everyone. Strength, strength and strength.”
He added: “Just to remember the nights and days that I spent [at the centre], is to shiver. Still not believing, but in prayer for all! May God bless each one’s family!”
Club legend Zico wrote on Instagram: “May God comfort the families who lost their children, grandchildren, brothers, nephews, relatives. Youngsters that dreamed of having a future in their lives and many, without a doubt, looking to help their families…Lives are gone. May the Black and red nation have the strength and faith to overcome this moment.”
Officials postponed Saturday’s two semifinals of the Guanabara Cup, one of which was between Flamengo and Fluminense.
Information from Reuters contributed to this report.