>> reporter: then betrayed ag last month. the v.a.'s independent inspector general announcing in its none of the deaths there could but now a startling admission. the inspector general's office forced to admit wait times contributed to the deaths of the veterans. >> did it contribute to the >> wait lists contributed the >> yes. >> reporter: the admission pbyouseans airs whistleblowers o charging the oig softethe >> at its best, this report is a whitewash and its worst at a feeble attempt to cover. >> reporter: the inspector general's office saying they're not clairvoyant and can't say exactly why those veterans died. pbutve their eysgatitheir charges. serena marshall, abc news, washington. another convicted killer has been executed in the ninth one in the stte t ye 38-year-old lisa coleman received a lethal injection last night for the death of her girlfriend's 9-year-old son after the supreme court rejected a late appeal to spare her life.