The U.S. attorney who launched a second federal investigation into the death of Alonzo Brooks in La Cygne, Kansas, says he’s now even more certain the Gardner man was murdered 16 years ago.

Officers responded about 7:30 a.m. Dec. 22 to a shooting call at a home on the 9400 block of North Brooks Street and found Pablo-Alonzo on the front porch, dead from a gunshot wound, an arrest ...