Police say charges likely will be brought against the person who took a gun to the house where a 3-year-old boy shot his 1-year-old brother in the head and killed him.

Cleveland Police Chief Calvin Williams says investigators are trying to determine where the gun in Sunday afternoon's shooting came from and how it was left within reach of a child.

Police say the older child picked up an unattended gun and shot the 1-year-old. The younger boy, identified as Braylon Robinson, was taken to a nearby hospital and later pronounced dead.

Williams called the shooting "a senseless loss of life."

Neighbors say the mother lived in the house with at least three small children.