How did Salvador Allende die during the 1973 Chilean coup?

During the military coup on September 11, 1973, Salvador Allende died inside the presidential palace, La Moneda, as it was being attacked by military forces.12

For many years, the cause of his death was a subject of significant controversy, with some parties claiming he had been killed by the military and others asserting he had committed suicide. However, a scientific autopsy performed in May 2011 confirmed that Allende died by suicide.123