A second person has died in hospital from injuries sustained in last week’s cafe blast in the far north Queensland town of Ravenshoe, police say.

Silver Valley woman Margaret Clark, 82, had been transferred to the Royal Brisbane and Women’s Hospital (RBWH) in a critical condition but was pronounced dead about 9:00pm on Sunday.

Wayne Bowden, who had known Ms Clark for about 30 years, said she was a wonderful woman.

• Ravenshoe cafe crash was ‘not intentional’
• Cafe blast victim dies
• Ravenshoe cafe horror

“She was the type of woman that would do anything for anybody,” Mr Bowden said.

“Very large family, lot of sons, daughters, grandkids. She was a very popular lady she was, a very caring person.”

There were 20 people injured, many seriously, when a ute crashed into a gas bottle at the cafe last Tuesday, causing an explosion.

Mother of two Nicole Nyholt, 37, died in hospital from her injuries on Friday.

Seven people remain in a critical condition in Brisbane hospitals.

Silver Valley resident Margaret Clark died on Sunday night, almost a week after being injured in the Ravenshoe explosion.

Nine other people are being treated for burns and other injuries in hospitals across the state.

RBWH burns unit director Dr Michael Rudd said on Saturday victims of the explosion would be undergoing operations for the next six to eight weeks.

“It’s doing really a series of operations over several weeks to manage their wounds until they’re completely closed,” he said.

“You might take 30 or 40 or 50 hours in the operating theatre on one case.”

Queensland Acting Premier Jackie Trad said on Sunday funding had been made available to cover travel expenses for families of the people injured.

She said the incident was deeply concerning and the community and families required a lot of support.

Police appeal for more witnesses

Police have renewed their appeal for witnesses to the car crash prior to the explosion to come forward and provide a statement.

Acting Superintendent Rolf Straatemeier said people could be withholding crucial information.

“We do know that there were a number of people in the main street of Ravenshoe outside the cafe as well as down the road,” he said.

“We seek people to come forward, contact police through Crime Stoppers and so that we can interview every person that was there.

Detective Acting Inspector Glen Horan said they were also hoping to speak with anyone who had contact with the driver of the ute, Brian Scutt, on the morning of the crash.

“Anyone who had contact with the driver that morning and knows his movements so that we can identify where he’s been, where the car’s been and effectively get a time line of that for the day,” he said.