Ghiyath Al-Din Tughluq was a provincial governor of the Khaljis, who saw an opportunity to seize power amidst the chaos and lack of central authority after the death of Mubarak Khan. He quickly restored stability and embarked upon a campaign of expansion, advancing into the  Deccan and Bengal. He built a new capital outside Delhi called Tughluqabad. His reign, however, was cut short after just 5 years, when he was buried in a roof collapse. Whether this was truly an accident or a covert assassination by his son is not entirely clear.