It is the capital city of Sialkot District. It is Pakistan's 13th largest city by population   and is located in north-east Punjab—one of Pakistan's most industrialised regions. Sialkot is believed to be the site of ancient Sagala , a city razed by Alexander the Great in BCE, and then made capital of the Indo-Greek kingdom by Menander I in the 2nd century BCE—a time during which the city greatly prospered as a major centre for trade and Buddhist thought. Ambiguity regarding Sialkot's ancient history has resulted in the promulgation of various myths and legends to explain the city's origins. Under Menander's rule, the city greatly prospered as a major trading centre renowned for its silk.