Okla. man co-accused in 4 deaths pleads not guilty

A 3-year-old boy was found unharmed in the apartment and was taken into protective custody.

The slayings, which investigators think happened during the day, brought attention to the troubled neighborhood and raised concerns about whether residents were afraid to call in crime tips. Police said there were two slayings at the complex last year, and crimes, such as break-ins and shootings, are common.