Dhaka, May 14 -- An Eid-ul-Azha reunion awaited a Chattogram family this Friday, as two brothers working in Oman prepared to return home -- but the journey ended in shock when all four siblings were found dead inside a car.

Instead, all four died together inside their vehicle at Oman's Muladdah, in what police suspect may have been caused by poisoning from toxic gas.

The deaths have plunged their home in Bandar Raja Para of Rangunia's Lalanagar Union into mourning.

The victims -- Rashedul Islam, Sahedul Islam, Mohammad Siraj and Mohammad Shahid -- were sons of the late Mohammad Hasan.

Of the five brothers, Mohammad Enam lives at the ancestral home with their elderly mother.

Rashed and Sahed were married, with their families also livi...