The National newspaper said the incident - in which Sir Salamo was attacked while driving from Tsak Valley to Wapenamenda to return to Port Moresby - was apparently in relation to a recent sanguma (sorcery) case.
The chief justice was taken by helicopter from the valley to Mt Hagen on Wednesday to travel back to Port Moresby.
Two women from Sir Salamo's Angutamanda village were recently accused of killing a leader of the Aluni through sanguma.
The allegations are that the two women, who were tortured and almost killed before being rescued by police, had "kaikai lewa (eaten the heart)" of the Aluni leader through sanguma.
Kakaraya, a well-known lawyer and former managing director of Mineral Resources Development Company, said yesterday that the attack on Sir Salamo was "very serious, as it's not only an attack on the chief justice as a person, but on this very high officer".
"As one of the leaders of the (Aluni) tribe, I condemn this barbaric act on chief justice," he said.
Kakaraya said the situation was allegedly provoked by policemen in the lead escort vehicle, but that was not an excuse for the attack to have taken place," Kakaraya.
Acting police commander Epenes Nili told The National that Sir Salamo was returning from Angutamanda to Wapenamenda at midday under police escort after spending the weekend there, when the party came across a roadblock.
Another source who was with Sir Salamo confirmed the incident.
Nili said the Wapenamenda Police Station commander and his men were in front but were no match for a large group of men in what was obviously a pre-planned attack.
He said his policemen were also attacked.
Nili said Sir Salamo's vehicle turned back and was attacked in the process.
He said Sir Salamo returned safely to his village while police came to Wapenamenda, and with reinforcements, went and cleared roadblocks.
Nili said three of the leaders of the roadblocks were arrested but the rest fled. "My instruction to my men is that all the perpetrators must be arrested and put behind bars for attacking the chief justice," he said. My men will not rest until those perpetrators are behind bars."
Nili said it was very unfortunate that Sir Salamo had become a victim of a sanguma accusation which was becoming prevalent in Enga.
"I totally condemn the actions of these lunatics," he said.
"They are wild animals who do not have any respect for the chief justice of the nation.
"I call upon all local leaders to immediately hand in all those lunatics involved in this roadblock."
The source said the vehicle Sir Salamo was travelling in was badly damaged and he suffered some injuries.