After a 20-minute search of backyards, officers of the FBI, State Police and their cadaver dogs left without commenting at about 2 p.m. Wednesday.

Spokesmen for State Police said nothing was found during the search, and Michael DeGeorge, Buffalo Police spokesman, said only that the search in the 100 block of the West Side street was for “evidence.”

Neighbors said FBI agents asked Tuesday for advance permission to search various backyards, saying only that it was connected to a crime committed several years ago. Police spokesmen would not say whether further cadaver searches in the neighborhood are planned.