Case closed? After 17 years, a new book and a film pose questions about the Oklahoma City federal building bombing. Phil Bacharach May 30th, 2012 Mysteries don't die easily. The shattered ruins of the Alfred P. Murrah Federal Building Mark HancockSeventeen years ago, a truck bomb ripped through the Alfred P. Murrah Federal Building in downtown Oklahoma City. Six years later, the federal government executed Timothy McVeigh for the crime that killed 168 people and injured more than 500 others. But the federal probe and prosecution, with 18,000 witness statements, 43,000 leads and 7,000 pounds of evidence, did not end speculation on what happened April 19, 1995. The recent release of a book and a documentary on the case refocuses on lingering theories that the bombing involved more than McVeigh and his ex-Army buddy, Terry Nichols, who is currently serving a life sentence for his role in the plot. In Oklahoma City: What the Investigation Missed — and Why It Still Matter