CBS 5 News has a look inside the investigation happening at the Phoenix VA.
The man leading the charge said his team is working with federal prosecutors to determine if what they uncover warrants criminal charges.
Congress grilled the head of the Department of Veterans Affairs on Friday on claims of secret lists, long wait times and possible deaths as a result of the alleged practices.
Many of the claims come from in the Valley.
"My staff is working diligently to determine the facts of what happened at Phoenix and who is accountable," VA Action Inspector General Richard Griffin said.
Griffin told the Senate Veterans Affairs Committee he has the resources he needs and is confident in the team he has assembled.
"We are not going to rush to judgement at the sacrifice of quality. I know you're not suggesting that. We are going to nail this thing," Griffin said.
Griffin said his team will focus on two questions:
Griffin also said the team has an exhaustive review underway involved the following elements:
Griffin, along with VA Secretary Eric Shinseki and a slew of others, answered questions from senators about the problems at VA health centers. But senators also gave them an earful of past problems discovered at the VA that have not been addressed and continue to this day.
Several senators quoted from prior inspector general reports that found staffers were cooking the books and manipulating wait times to meet performance goals.
That's what's alleged to have happened in Phoenix, and Griffin said he believes they will find proof.
"It's not a new issue and I'm confident that when we finish our work in Phoenix, it'll be the same outcome as these previous reports," Griffin said.
When asked directly about how many people Griffin has identified as having died while waiting for care, Griffin said there is still a lot of work to do and while they have found people who have died waiting on these so-called secret lists, they cannot yet directly attribute any of their deaths to the delay in care.
VA officials said the VA has the largest integrated healthcare system in the U.S. with 150 medical centers, serving more than 6.5 million veterans a year.
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