The Bureau of Alcohol, Tobacco, Firearms, and Explosives has vowed to work nonstop to locate those responsible for a car bomb that injured a lawyer and his two sons when it exploded on a Michigan roadway at 5:40 p.m. Tuesday.
The explosion injured Erik Chappell, 42, who drove with his sons, ages 11 and 13, in the car on East Elm near Interstate 75 in Monroe, Mich.