At least 11 people of two families suffered burn injuries after a gas explosion at a building at Paschim Talla area of Narayanganj Sadar upazila today.

Among the injured, five are in critical condition and were sent to Sheikh Hasina National Institute of Burn and Plastic Surgery, reports our Narayanganj correspondent quoting a fire service official.

"The gas explosion occurred around 6:00 am today in two flats on the second floor of a building. Locals at first took the injured to Narayanganj General Hospital. From here five were sent to Dhaka in a critical state. They suffered 50% burn injuries," Narayanganj Fire Service and Civil Defence Deputy Assistant Director Abdullah Al Arefin told The Daily Star.

"The explosion might have occurred from gas leakage from stoves," he said.

A portion of a wall of the building also collapsed due to the explosion, said locals