Khagrachhari: At least seven people including a couple sustained burn injuries from an explosion at a gas cylinder shop at Khobongpuria village in Sadar upazila early Tuesday.

Among them, four critically injured were transferred to Chattogram Medical College Hospital, said Shahadat Hossain Titu, officer-in-charge of Sadar Police Station, reports the UNB.

The injured are Bhuban Bikash Chakma, 50, Abdul Hamid, 23, Md Jamir, 22, Mahmud Ullah, Newton Chakma, Mohiranjan Chakma and his wife Minoti Chakma.

A cylinder of the shop, in front of ‘Youngster Club’, exploded with a big bang around 4 am, leaving seven people of adjoining shops injured.

The explosion also damaged parts of the wall of the club, witnesses said.