Former Pakistan President Pervez Musharraf on Friday filed a petition with the Lahore High Court (LHC) challenging the death sentence in a high treason case. The 86 page-long petition was filed by Advocate Azhar Siddique on behalf of Musharraf. An Islamabad-based special court on December 17 pronounced the death penalty on Pervez Musharraf in the high treason case, reported Dawn news.