A stage collapsed in northern Mexico on Wednesday as strong winds gusted through a presidential candidate’s campaign rally, leaving at least nine people dead and around 50 others injured.

Images of the accident showed a crowd fleeing as the structure supporting the stage toppled over and a giant screen fell on the stage where presidential candidate Jorge Alvarez Maynez and members of his Citizens’ Movement party were standing.

Nine people died and around 50 people were also injured, Nuevo Leon Governor Samuel Garcia said on social media, while the director of Mexico’s social security institute reported that dozens were being treated at local clinics.

The victims were eight adults and one child, Garcia said, adding that he was headed to a hospital where three people were in surgery.

Maynez, 38, said that he was safe following the accident in the town of San Pedro Garza Garcia, which is part of the greater metropolitan area of the city of Monterrey in Nuevo Leon.

“I am fine and in communication with the authorities” over what happened, Maynez wrote on Twitter, adding that the priority was to take care of the victims.

He said that he would remain at the scene until the last injured person was taken to hospital.

Some members of his team were being treated at the hospital, according to Maynez, who according to polls is in third place ahead of the June 2 presidential election.

He lags far behind both frontrunner Claudia Sheinbaum and main opposition presidential candidate Xochitl Galvez in surveys.

In a post on social media, outgoing President Andres Manuel Lopez Obrador offered his sympathies to the family members and friends of the victims.

He said the campaign rally accident was caused by strong winds.

Maynez’s party said in a statement that he would suspend all campaign events “in solidarity with those affected.”

Jose Juan, who was at the rally, recounted how the structure came crashing down on the candidates and their supporters.

“It hit me on the head and I fainted. The rest was pure hysteria, pure panic,” he told broadcaster Televisa.

The other two presidential candidates also expressed solidarity with those affected.

“I hope with all my heart that there are no serious injuries,” opposition candidate Galvez wrote on social media before the deaths were confirmed.

On June 2, Mexicans will vote for a new president as well as members of Congress, several state governors and local officials.

In total, more than 20,000 positions are being contested.