Dhananjoy Pal tried hard to hold back his tears when the silent rally reached the gate of the annexe building of AMRI Hospitals in Dhakuria on Wednesday.

Shivamitra Chakraborty clutched a photo of her mother. She placed it at the gate, along with a candle, and then leaned on a woman's shoulder and cried.

Paromita Guha Thakutra, known for pursuing the AMRI case in court, wiped her tears with her sari.

On December 9, 2011, over 90 people were killed - most of them choked to death - in a fire that broke out in the hospital's basement.

On December 9, 2015, at least 70 people walked silently from the Dhakuria lake to the AMRI Hospitals in memory of their loved ones and "to denounce the slow pace of judicial proceedings in the case".

"It's been four years but nothing has happened. The charges haven't been framed yet," Paromita, who lost her mother in the fire, said. "We don't want to wait for 20 years to get justice."

The case is being heard in an Alipore court based on the charge sheet filed by police. After hearing all sides, the court will frame charges and then the trial will start.

Shivamitra of Class IX in South Point was in Class V when her mother Munmun died in the fire. She has only memories of her to live with but her brother, five-year-old Rishiraj, can barely remember their mother.

"My son tells people that his mother has become a star in the sky," said Subhasis, father of Shivamitra and Rishiraj.

Family members of those killed in the fire have filed a petition in Calcutta High Court seeking a speedy trial. They are upset that between two hearings, there is always a gap of two or three months. They want the hearing to happen daily. "If we don't get a good order, we will go to the Supreme Court," Paromita said.

Urban development minister Firhad Hakim, who was present at the Dhakuria lake, later told Metro: "We need good hospitals.... So, we have allowed the main building of the AMRI Hospitals in Dhakuria to function. But our government will not allow the hospital to run from the annexe building."

After remaining closed for over two years, the main building reopened in December 2013.

Earlier in the day, the AMRI Fire Victims' Association organised free health check-up and blood donation camps on the lake premises.

The association had also organised a pulmonary function test. "We organised the pulmonary test because most people in AMRI had died of asphyxia," said Pal, who lost his 14-year-old daughter in the fire.

Pal travelled seven hours from his hometown in Bankura's Kotulpur to be part of the rally. "My wife and I are trying to cope with the loss, but my 12-year-old son keeps asking why this had to happen to his didi."