Counsel for British soldiers suggested yesterday that there might have been "a conspiracy of silence" about a civilian who was shot on Bloody Sunday and carried away.
Meanwhile the inquiry into the shootings in Derry on January 30th, 1972, also heard more evidence about an incident in which Provisional IRA members allegedly tried to disarm an Official IRA man who wanted to shoot at soldiers .
Mr Edwin Glasgow QC, for soldiers, had already indicated last year that a case would be made that there were up to 34 "hidden casualties" on Bloody Sunday, many of whom may have been gunmen or bombers.
Yesterday Mr Glasgow said that, when and if certain evidence was given, it would be suggested to the tribunal that a civilian who was shot in the head was probably carried away and that there had been "a conspiracy of silence" about him.
"Everybody has pretended that that did not happen," said counsel.
The witness who was being questioned about this alleged incident, Mr John McCourt, said he was positive he had not seen any such incident.
Another witness, Mr Peter Mullan, described seeing an incident in the William Street area.
This incident happened near to where two people, Damien Donaghy and John Johnston, had been shot and injured by soldiers before the main body of paratroopers entered the Bogside and shot 13 civilians dead.
After the two wounded men had been taken to a house in Columcille Court, Mr Mullan said, he saw a civilian in the same area with a rifle under his coat.
This man was in an agitated and angry state and was being restrained by two or three other men, with whom he was arguing.
These men were shouting something like: "No, you can't do that.Hand it over.
"You know there are orders. No guns today."
The man with the gun was replying something like : "I am not going to stand here and let those bastards shoot unarmed people."
The witness said he knew this man, who he suspected had connections with the Official IRA.
Counsel to the tribunal, Mr Christopher Clarke QC, said that this man, named in Mr Mullan's statement, had been given the cipher "OIRA 1".
This was for the purposes of the inquiry, as he was a person who had been granted anonymity by the tribunal.
Mr Mullan also agreed to write down for the tribunal the name of a person he believed to have been one of the three who confronted the gunman, OIRA 1.
Replying to Mr Clarke, he confirmed that this person was someone who was "on the Provisional wing".
Earlier yesterday, Mr Paul Coyle described running with other civilians across the courtyard or car park of Glenfada Park North.
He said that as he ran, two soldiers stood at another side of the courtyard "and began firing their weapons at us from the hip".
Mr Coyle said that the soldiers fired between 10 and 20 shots at them as they ran across.
As he reached the south-western exit of the courtyard a Knights of Malta first aid worker, Ms Evelyn Lafferty, wearing a white coat, passed him running in the opposite direction, into the courtyard. "I know that when I got to the other side there was still shooting, because I was amazed (that) she was running out in the middle of it," he said.
The inquiry continues today.