A US human rights lawyer has told the inquiry that on the evening of Bloody Sunday, she was present when one of the main organisers of the march received a phone call from the senior police officer in Derry, Chief Supt Frank Lagan.
Ms Kathleen Keville yesterday said that the late Bridget Bond had "raised her arm to hush people" after she answered the phone in her home.
Afterwards Ms Bond just said: "That was Frank Lagan. He said he was sorry, that he had tried but they would not listen to him."
The inquiry has heard evidence earlier that Supt Lagan argued against the civil rights march being prevented from reaching the Guildhall in Derry and also tried to persuade British army officers not to send the paratroopers into the Bogside.
Ms Keville described how, during the evening and night following Bloody Sunday, she tape-recorded statements from eyewitnesses as to what they had seen during the shootings in which 13 civilians died and a similar number were wounded.
The tapes were returned to her in 2000 by Ms Bond's husband, Johnny, when she visited him in Derry. They were still in the old shopping bag in which she had left them in Ms Bond's house in 1972.
Ms Keville commented that her father, a judge, had ingrained in her that people in positions of public trust should carry out that trust. She said that from her perspective, what the late Lord Widgery, the British Lord Chief Justice who chaired the now discredited initial inquiry into Bloody Sunday, had done was more unforgivable that what the soldiers who carried out the killings had done.
This was because, "with no expectation of accountability, the security forces were empowered to kill again, which they did on repeated occasions over many years.
"I had never encountered before what I regard as an act of judicial corruption," she said. "I don't believe that judges should confuse their role with the role of politicians. I know that Lord Widgery did this."