A worker has died at the Arena Pantanal in Cuiaba, one of the stadiums due to host FIFA World Cup matches next month.
At around 10.00am local time on Thursday, a construction worker was killed after suffering an electric shock at the stadium.
A statement from Secopa MT, the organisation body for the tournament in Cuiaba, confirmed the tragic news.
"The Special Secretariat of the World Cup Mato Grosso regrets to inform the death of Muhammad Ali Maciel Alfonso, 32," it read.
"He was the victim of an accident caused by an electrical discharge on Thursday morning, while working on the 20th level in the eastern sector of the stadium.
"Ambluance teams and the fire department of the State of Mato Grosso assisted on site, where (they) did all resuscitation procedures.
"Appalled, Secopa MT send its sympathies to the family of Alfonso and also said it would await the work of experts of the technical police, who will investigate the causes of the accident.
"The MT Secopa regrets the sad episode, which occurred on the eve of the inauguration of the Pantanal Arena and after the entire period of construction there has been no occurrence of a severe or other accident on site."
Aldo Rebelo, Brazil's Minister of Sport later released a statement of his own.
"I deeply regret the death of the worker Muhammad Ali Maciel Alfonso, who acted in the works Arena Pantanal. And sympathize with their families, friends and workmates," it read.
The arena is due to host four World Cup matches at the finals, including Chile versus Australia on June 13, the second day of the tournament.
Mr Alfonso is the latest to die in the building of Brazil's World Cup stadia.
In November last year, two people were killed when a crane struck the roof of the Arena de Sao Paulo, causing a partial collapse.
Further accidents have taken the lives of workers at the stadium in Manaus, while a third man lost his life in Sao Paolo following a reported fall in March.
|Did Carroll´s wondergoal give the West Ham striker whiplash?|
|Iniesta suffers calf injury|
|Swansea situation not ´hopeless´, says Clement|
|Real Sociedad 0 Barcelona 1: Neymar ends Anoeta curse|
|´Immeasurable bulls**t´ - Ligue 1 coach destroys Van Basten´s offside plan|
|Simeone praises Atletico´s precision in Copa Del Rey win|
|Fonte situation difficult for Southampton - Puel|
|´Some of the best football in the UK´ - Watford´s Mazzarri hails Bournemouth|
|Senegal 2 Zimbabwe 0: Cisse´s men charge into quarter-finals|
|Rivaldo backs Luis Enrique to deliver more Barca success|
|Atletico Madrid 3 Eibar 0: Routine win earns quarter-final lead|
|Jesus will make Premier League history - Rivaldo|
|Adebayor: Arsenal are just Ozil and Sanchez|
|Algeria 1 Tunisia 2: Favourites on brink of elimination|
|Bayern keen to seal Coman deal as Rummenigge cools Gnabry interest|
|Pochettino has done his homework on Jesus as Spurs look to march on|
|Scrap offside? Premier League managers give Van Basten´s plans a cool reception|
|Coman ready for Bayern comeback, confirms Ancelotti|
|Pochettino upbeat despite six weeks out for Vertonghen, Lamela still a mystery|
|Cerezo defiant over Griezmann amid talk of Manchester United agreement|
|Robinho named in Brazil squad for Chapecoense fundraiser|
|Davies and Lookman aren´t the big men of Everton, warns Koeman|
|Ivory Coast v DR Congo: Dussyer demands champions show true strength|
|Replacing Robben and Ribery not easy - Hitzfeld|
|Yeray back in Athletic training after successful cancer surgery|
|Karanka targeting more Boro deals after Bamford swoop|
|Cavani: I am the ultimate finisher|
|Morocco v Togo: El Ahmadi hungry for success|
|Ancelotti denies Verratti approach|
|A-League Review: Cahill double sees Melbourne City sink Mariners|
|Manchester United very happy with Shaw, insists agent|
|Mertesacker extends Arsenal deal|
|Boost for Arsenal as key quartet returns to training|
|Will Jesus save Manchester City´s title bid? Guardiola´s new striker in Opta numbers|
|Tevez mobbed after touching down in Shanghai|
|Payet exit not inevitable - Bilic|
|Wenger: Arsenal don´t need Payet|
|Jesus wants Manchester City titles|
|Orsolini arrives for Juventus medical|
|Rivaldo backs Coutinho to join Neymar at Barcelona|
|No danger of Messi leaving Barcelona, says father|
|Augusto: I convinced Oscar to come to China|
|Madrid-bound Maradona visits Napoli training|
|Sevilla in no rush over Sampaoli talks despite Barcelona links|
|Cafu: Resurgent Brazil can challenge world´s best|
|Klopp thrilled with Coutinho|
|Manchester United replace Real Madrid as world´s richest club|
|Madrid squad annoyed by defeats - Zidane wants more energy after latest loss|
|Casemiro rues more misery for Madrid against Celta|
|´Job done, let´s go home´ - Klopp happy to avoid extra time with narrow Plymouth win|
|FA Cup Review: Southampton leave it late to beat Norwich|
|Real Madrid 1 Celta Vigo 2: Aspas and Jonny extend Madrid winless run|
|Plymouth Argyle 0 Liverpool 1: Rare Lucas goal sees Klopp´s men through|
|Manchester City in La La Land as Schalke toil underground|
|Cameroon 2 Guinea-Bissau 1: Ngadeu-Ngadjui completes comeback to send Broos´ men top|
|Monaco confirm signing of Ajax teenager Antonucci|
|Manchester United´s interest in Griezmann is unsurprising - Simeone|
|Bamford ends spell in Chelsea wilderness with Boro return|
|Louis the great - Luis Enrique explains his and Barca´s debt to Van Gaal|
|Gabon 1 Burkina Faso 1: Spot-on Aubameyang makes his point|
|PSG send Ikone on loan to Montpellier|
|Senegal v Zimbabwe: Cisse wants to live up to favourites tag|
|Ghana´s Rahman leaves AFCON with knee injury|
|Algeria v Tunisia: Mahrez demands improvement in crucial Group B clash|
|Dortmund forward Dembele hits out at Bundesliga refereeing|
|Robben hopes Alonso stays at Bayern amid retirement rumours|
|Asian champions Jeonbuk banned from 2017 Champions League|
|Rakitic still an important player for Barcelona - Luis Enrique|
|Jesus will develop quicker at City - Emerson|
|Always take the weather with you - Spanish snow blights CSKA´s training camp|
|Messi never gave Coach interview, claims father|
|Gotze questions critics but admits to falling short of expecations|
|´Conte can have our title´ - Ranieri wants Chelsea to win the Premier League|
|Tottenham reject Premier League, Bundesliga offers for Wimmer|
|Liverpool sell Ilori to Reading|
|Potential victims in football abuse probe surpasses 500|
|Bonaventura signs new AC Milan contract|
|Messi: Ronaldo has achieved great things|
|Koscielny: Wenger has built men at Arsenal|
|Messi vows to stay at Barcelona ´for as long as they want me´|
|Cafu adamant Neymar will become world´s best|
|I´m just taking a sabbatical - Van Gaal denies he´s retired|
|Not even Gerrard won Premier League - Buttner says he´s not a United flop|
|Samper ignored Wenger as Barca midfielder rejected Arsenal|
|Pleased Pioli wants more from Inter|
|Evergrande boss Scolari dismisses Turan links|
|Klopp seeks legal advice over Matip|
|Marseille complete Sanson move|