Panna suffered a heart attack after slipping from a hill in Shillong, his nephew, Laikuzzaman Talukder Mintoo, chairperson of the Chirapara Par Satoria Union Parishad and organising secretary of the Kaukhali Upazila Awami League, confirmed to the Dhaka Tribune. 

Jasim Uddin Khan, a relative of the deceased, told the Dhaka Tribune that he last spoke to Panna three days ago. 

Panna mentioned that he had returned to Dhaka on July 25, two days after staying at his residence on Shahid Fazlul Haque Road in Pirojpur town. Jasim said he later learned that Panna had died in Sylhet after crossing into India through the Tamabil border. 

According to sources quoted by the Dhaka Tribune, Panna was accompanied by a leader from the central committee of the Awami League, originally from Chittagong, and another leader from the Jhalakathi Chhatra League during his escape. 

The Chhatra League is the student wing of Sheikh Hasina's party, the Awami League. -- ANI