SUMMERVILLE -- Authorities likely will have to wait a couple of months to learn what killed a 2-year-old boy whose body was found last month in a garbage can filled with 400 pounds of cement.

Rodricus Williams' father is accused of refusing to get medical care for him after the boy's health failed on June 7 in Summerville. When the boy died, investigators said, Roger "Tony" Williams and girlfriend Grace Trotman dumped him in a cement-filled can behind an abandoned house in Bowman.

On Thursday, Berkeley County Coroner Glenn Rhoad said a battery of tests is being conducted to determine what killed Rodricus. The results and a final report from pathologists could take two months to complete, he said.

Berkeley County Sheriff Wayne DeWitt has said that Trotman indicated the boy had been beaten in the past. Investigators planned to focus on Rodricus' medical history and find out why he had been treated at Medical University Hospital on numerous occasions.

Dan Moon, public information officer for the sheriff's office, said Thursday that he had no new information to release.

Roger Williams and Trotman remain in custody at the county jail on charges of homicide by child abuse. They are still awaiting bail hearings before a circuit judge. No date for those hearings has been set, authorities said.

Public Defender Patricia Kennedy, who represents Williams, declined to comment on the case. Attorney Keith Bolus, Trotman's lawyer, did not return a call from The Post and Courier.

Arrests affidavits indicate Rodricus died "from injuries and/or physical distress" in early June while he was in Trotman's care at her Longbourne Way home. Authorities said the pair then concocted a story about the toddler falling into Charleston Harbor on July 6 while walking along The Battery sea wall. That led to an exhaustive, 12-hour search by police, fire and Coast Guard personnel that cost nearly $58,000 to conduct before officials discovered the truth about Rodricus' disappearance, according to city officials.

Reach Glenn Smith at 937-5556 or gsmith@postandcourier.com.