How did Salvador Allende’s death occur during the 1973 military coup?

During the military coup on September 11, 1973, Salvador Allende died inside the presidential palace in Santiago while it was under a concerted attack by the armed forces.12

For many years, the cause of his death was a subject of significant controversy, with some parties suggesting he had been killed and that a suicide had been staged. However, a scientific autopsy performed in 2011 confirmed that Allende died by suicide from a gunshot wound.13