Forensic Investigation's Findings Along With the Evidence against Timothy McVeigh

According to the Federal Bureau of Investigations (FBI), Timothy James "Tim" McVeigh born on 23 April 1968 and later executed on 11 June 2011 was responsible for the 19 April 1995 detonation the truck bomb at the Alfred P. Murrah Federal Building in Oklahoma City. Quintessentially, the bomb led to the death of one hundred and sixty-eight and injuries to more than six hundred people (Shariat, Mallonee& Stephens-Stidham, 1998). The FBI was involved in a comprehensive forensic research to link McVeigh to the bombing. One of the major links is earplugs that he wore to reduce the impact of deafening sound that would come after the explosion. The recovery of the earplugs showed revealed fingerprints of the accused showing that he had used them at the scene of the crime. In essence, the earplugs werein the possession of McVeighupon his arrest, about eighty minutes after the explosion. The earplugs tested positively for nitroglycerine (NG) which is vital in making of high explosives and producing ethylene glycol dinitrite (EDGN) and dynamite. Additionally, the right pocket tested positive for pentaerythritol tetranitrate (PETN) a highly explosive compound present in several bombings (Serrano, 1997).

On the other hand, the jeans trousers and tow T-shirts that the accused was wearing contained traces of residues of the bomb. In addition, his knife and the knife’s sheath had the same traces establishing that he had handled the bomb before it exploded. Ideally, most of the forensic tests were McVeigh’s properties while others came from the debris. Fundamentally, his T-shirt with blue sleeves had traces of both PETN and NG. The same day, McVeigh wore another T-shirt that too tested positively for the compounds (Serrano, 1997).

Lastly, pieces took from the inside of Ryder truck he had rented confirmed presence of NG and other explosive compounds. According to Serrano (01 Feb. 1997), the analysts believe that “The back of the truck allegedly carried 4,800 pounds of ammonium nitrate and fuel oil mixed into barrels, with the barrels wrapped by a detonator cord.” Notably, the forensic evidence was enough to convict McVeigh of the crime. 




Serrano, R. A. (01 Feb. 1997). “The Los Angeles Times." Prosecutors Focus Bombing Case on 6 Key Items. Retrieved 31 Jan. 2015 from

Shariat, S., Mallonee, S., & Stephens-Stidham, S. (December 1998). "Oklahoma City Bombing Injuries". Injury Prevention Service, Oklahoma State Department of Health.