MILWAUKEE—The FBI Milwaukee Field Office announced today the release of age-progressed photographs of Leo Frederick Burt who is wanted for allegedly participating in the bombing of Sterling Hall, on the campus of the University of Wisconsin, on August 24, 1970. The blast from the explosion, combined with the fire, resulted in the death of a 33-year-old researcher, and four others were severely injured.

On September 2, 1970, four men were charged in the bombing, which was a protest to the war in Vietnam (Sterling Hall housed an army mathematics research center). Three of the four men were later arrested and convicted; the fourth man—Leo Burt—remains wanted by the FBI. At the time, the bombing of Sterling Hall in Madison was the largest act of domestic terrorism in the U.S., prior to Oklahoma City in 1995.

During the 53rd anniversary of the Sterling Hall bombing, the FBI has released a new series of images created using age-progression technology and an original photograph of Leo Frederick Burt obtained by the FBI in 1970.

The FBI is offering a reward of up to $150,000 for information leading to the arrest of Leo Frederick Burt. https://www.fbi.gov/wanted/dt/leo-frederick-burt

If you have any information concerning this case, please contact the FBI’s Milwaukee Field Office at (414) 276-4684, or you can submit a tip online at tips.fbi.gov, which can remain anonymous.