CLOSE An oceanside boardwalk collapsed during a nighttime concert in Vigo, Spain. Officials told the Cadena Star that the boardwalk collapsed "probably because of excessive weight" on it. USA TODAY 
 
 Several firefighters search for victims after several dozen people fell into the sea when a wooden gateway collapsed during a concert in Vigo, northwestern Spain, late on 12 August 2018. (Photo: EPA-EFE) 
 
 Hundreds of people were injured when a wooden boardwalk collapsed into the sea at a music and urban sports festival in northwestern Spain, authorities said Monday. 
 
 Regional health chief Jesus Vazquez Almuina told Antena 3 television that 313 people required medical treatment following the incident in the city of Vigo in the Galicia region at around midnight Sunday. 
 
 A 130-foot stretch of the boardwalk gave way during a rap performance — the closing event of the three-day festival — sending concertgoers sliding into the sea. 
 
 Five people suffered serious, but not life-threatening injuries, officials said. 
 
 Enrique Cesar Lopez Veiga, the president of the Vigo port authority, said he suspected the boardwalk, which is supported by concrete pillars, had a structural problem. 
 
 He told Cadena Ser radio that it collapsed "probably because of excessive weight" on it. 
 
 Aitana Alonso, a concertgoer, told the Faro de Vigo newspaper: "It broke and we all fell. People fell on me. I had trouble getting out. I was trying to get out and skidded, my foot got stuck, in the water. I got it out. A boy gave me his hand and I got out. I felt paralyzed and I left. There was a girl with blood on her head." 
 
 Vigo mayor Abel Caballero announced an investigation into the incident. The popular O Marisquiño annual festival draws a large crowd of youths and features music and sports such as skateboarding. 
 
 Contributing: The Associated Press 
 
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 MADRID (Reuters) - Hundreds of people were hurt, two seriously, when a wooden platform collapsed at a seaside music festival in northwestern Spain on Sunday night, local authorities said. 
 
 There were no reports of any fatalities from the incident which the Galicia regional government said left 316 people injured at the O Marisquino festival in the town of Vigo. 
 
 Nine of them are still in hospital and two are in the intensive care unit but their lives are not in danger, city hall said in a statement. 
 
 Vigo’s mayor Abel Caballero said the platform that collapsed just before midnight was 30 meters long and 10 meters wide. 
 
 City hall added that Pedro Saura, junior minister for public works, has ordered an investigation into the cause of the collapse. 
 
 People attending the concert said the crowd was enjoying the concert when they heard the boardwalk breaking. 
 
 “We were jumping when we heard the sound and we saw everything collapsing,” one woman told state broadcaster RTVE. 

 More than 300 people have been injured, five of them seriously, after part of a wooden promenade collapsed at a music festival in Spain. 
 
 The seafront boardwalk, which was 98ft long, was packed with people watching a rap artist in the northwestern city of Vigo when it suddenly collapsed just before midnight on Sunday. 
 
 "The causes have yet to be determined. Everything indicates that no one is trapped underneath," Vigo mayor Abel Caballero told reporters at the scene. 
 
 Witnesses told Spanish media that people struggled to scramble for safety from under the debris of the structure. 
 
 A total of 313 people were injured, five of them seriously with broken bones requiring hospitalisation, the regional health minister in the northwestern region of Galicia, Jesus Vazquez Almuina, told local radio.
– It was the final performance of a three-day music and urban sports fest, wrapping up Sunday in Vigo, Spain, but it ended with people plummeting into the sea, blood, and panic. USA Today reports a 130-foot-long portion of a boardwalk collapsed around midnight, sending hundreds into the waters beneath. A regional health chief tells local TV that 313 people were injured, mostly with bruises, per the Telegraph. Officials say five people sustained serious injuries, including head injuries and broken bones, but are expected to recover. "It broke and we all fell," one attendee told a Spanish newspaper. "People fell on me. I had trouble getting out. … A boy gave me his hand and I got out. I felt paralyzed and I left. There was a girl with blood on her head." A video emerged on social media that appears to show the immediate aftermath of the collapse, with people shouting and trying to pull each other to safety. Vigo's mayor, Abel Caballero, told reporters "the causes have yet to be determined" and that it didn't appear anyone remained trapped under the debris, per the Telegraph. But the head of the city's port authority told a local radio station it was likely "excessive weight" that caused the boardwalk, held up by concrete pillars, to give way, and that there may have been structural issues, USA Today reports. One witness account lends credence to the theory of too many spectators. "There were loads, I mean loads of people," the witness tells RVTE, via Reuters. An investigation is underway, Caballero says.