Six people killed as helicopters collide over Brazil’s Rio de Janeiro

Two helicopters collided in midair before crashing into car park of electric vehicle dealership, fire service says.Two helicopters have collided in mid-air over the Brazilian city of Rio de Janeiro, killing all six people on board, local authorities said.Officials have launched an investigation into the cause of Sunday morning’s crash over a western suburb of the city called Recreio dos Bandeirantes.Recommended Stories list of 3 itemslist 1 of 3Indonesian rescuers find wreckage of plane that had 11 people on boardlist 2 of 3Three British navy personnel killed in helicopter crash in Englandlist 3 of 3At least 22 killed as Pakistani military helicopter crashes in Kashmirend of listFirefighters said the helicopters collided before plummeting into the parking lot of an electric car dealership, setting about 20 vehicles on fire.Fire services spokesman Fabio Contreiras said the blaze was difficult to extinguish because of toxic gases released by lithium-ion batteries in the electric vehicles.“When this type of battery catches fire, it releases highly toxic gases and intensifies both the temperature and severity of the blaze,” Contreiras said.“Extinguishing a fire in one of these vehicles requires three to four times the amount of water needed for a standard car fire.”People gather near charred vehicles following the crash [Ricardo Moraes/Reuters]He added that the surrounding area was densely populated and that the death toll would have been far higher had the helicopters not crashed into the car park.Contreiras said rescue workers had discovered one helicopter in flames among the electric cars, with five victims inside. A second helicopter, found about 100m (328 feet) away, was carrying only the pilot, who also died.Debris from the helicopters was found hundreds of metres from the crash site. Footage shared online showed a thick plume of smoke rising from the car park into the sky.