HORRIFYING footage shows a woman crushed to death by a 400lb barbell while working out in front of her daughter. The woman can be seen struggling with a device that appears to be too heavy, and she collapses under its weight onto the bench where the bar crushes her neck, killing her on the spot. NewsflashThe woman approached the weight stand before being crushed to death[/caption] NewsflashThe woman visibly struggles with the weight before collapsing in front of her daughter (right)[/caption] She was reportedly at the gym with her daughter, who can also be seen in the footage, along with other gymgoers who rushed to help her after the 180-kilogramme (397-lb) barbell fell on the back of her neck, leaving her slumping to the floor lifeless. One man can be seen lying her on her side as they all look on in apparent shock. The incident took place at a Gym Fitness Sport gymnasium located in Mexico City on Monday. The woman, who has not been named but who was reportedly between 35 and 40 years old, was exercising at the gym, reportedly with her unnamed daughter, when the tragic incident occurred. The footage shows a burly man adjusting the weights on the device before the woman positions herself to lift it. But it all goes horribly wrong, and the bar immediately hits the back of her neck, pinning her down. Most read in News THERE WILL BE BLOOD Putin's hypersonic missiles 'ready to launch' as he stockpiles blood FAMILY BUSINESS Lavish lifestyle of gangster's moll who recruited her mum, dad and brother 'VERY SAVVY' Donald Trump praises Vladimir Putin's 'genius' plan to invade Ukraine RAPE OUTRAGE I’m facing 100 lashes and 7 years in a Qatar jail after I reported being raped HELL ON EARTH We had a dream home...now we’re hiding in a cellar under roar of Putin’s guns HORROR IN AISLES Chilling moment solicitor injects food at Sainsbury's with his own BLOOD The man and the young girl try to lift the barbell off the woman to free her, but their attempts are in vain. Two other people then come over and help lift the device, with the woman then slumping lifeless on the floor. The woman’s daughter is said to be receiving psychological support after the horrific event. The state prosecutor’s office has opened an investigation into the incident. The owner of the gym, who has not been named, was reportedly briefly arrested in order to confirm the woman’s identity. The investigation is ongoing. NewsflashGymgoers try in vain to help the woman who died instantly[/caption]