CHICAGO (AP) — Authorities say the death of a 3-year-old boy who died after plunging from the 17th floor window of a Chicago apartment building is being investigated by police and child welfare officials. The Cook County medical examiner’s office identified the boy Wednesday as Lamar Roach Jr. of Chicago. Police say the boy may have pushed out a window screen in an apartment Tuesday night before he fell from the window. He was found in bushes below and pronounced dead at a hospital. Police say the boy’s fatal plunge about 10:40 p.m. Tuesday was being investigated as an accident. The state’s Department of Children and Family Services is also investigating.