A doctor, his wife, daughter and their domestic help died when their car collided with a passenger bus in Comilla's Daudkandi upazila early today.

Two of his children are in critical condition.

The deceased were Fazlul Bari Mithu, 40, a psychiatrist, his wife Asmaul Hosna, 34, daughter Fahmida Fairooz Sneha, 11, and domestic help Sima, 21.

Bari was an associate professor at National Institute of Mental Health and Research at Sher-e-Bangla Nagar, said Md Jamal Hossain, social welfare officer of the institution. He was also serving as an assistant registrar at the hospital.

The Comilla-bound passenger bus at Tamta area that collided with a private car leaving a doctor, two of his family and a domestic help dead. January 26, 2016. Photo: STAR

The incident took place while the family was heading back to Dhaka from a wedding.

Their car collided with a Comilla-bound passenger bus at Tamta area around 1:45am, our local correspondent reports quoting police.

The doctor's two other children – Fariha Bushra Bari Faiza, 8, and Shahjalal Ariyan Bari, 4 – managed to escape death, said Sergeant Moniruzzaman, in-charge of Gouripur highway police.

"The doctor, his wife and eldest daughter died on the spot," he said.

The injured children were referred to Dhaka as their condition deteriorated, said Dr Farzana Akhter, a doctor of Daudkandi Upazila Health Complex.

"They went to Comilla to attend a family wedding," said Selina Akhter and Nahida Islam, sisters of the deceased doctor. "They were on their way back to Dhaka."

On information, police recovered the bodies. The bodies have been kept at Iliotganj highway police camp. The vehicle was seized but its driver and helper managed to flee.