Officials discovered the body of four-year-old Wyatt Smitsky in a septic tank just yards from his home in Beaver County Saturday Sept. 5.
A western Pennsylvania coroner says she's not prepared yet to say how the 4-year-old boy died.
An autopsy was performed Sunday, Sept. 6, but Beaver County Coroner Teri Tatalovich-Rossi said Monday more tests are needed. She declined to say how long it may be before she rules.
Smitsky's body was found around 12:45 p.m. Saturday after searchers drained a septic tank on property near his home in Greene Township, about 25 miles northwest of Pittsburgh.
State Police are calling it a homicide investigation, but say they're waiting for autopsy results before charging anyone.
Smitsky's parents have been questioned.
Expressing outrage and grief, residents and friends paid their respects at a vigil for Smitsky at the Hookstown Free Methodist Church on Sunday night.