The latest victim died at the Angau Memorial Hospital after being admitted yesterday.
Six passengers, including two children, had died instantly after a 25-seater PMV bus plunged into a drain at Six-Mile yesterday afternoon.
He was reportedly one of the survivors who were thrown out of the bus before it nosedived into the drain. Unfortunately, he succumbed to his injuries last night.
Eyewitnesses claimed the bus was travelling at high speed towards Nadzab when it came upon another vehicle in front. The driver tried to veer away from it when he lost control.
Residents have described it as one of the first nasty accidents along the newly built four-lane highway between Lae and Nine-Mile.
Police have already conducted an investigation into the incident, however, the crew is yet to be interviewed.
The other passengers are still nursing their injuries.
Meanwhile, a number of commuters have raised concern that the road has not been officially opened yet but accidents have already occurred.
"We have not done the grand opening of the multi-million kina highway but we have already had deaths along the highway and it's very sad," Marcus Gene, a Two-Mile resident, stated.