Just a day after Corey Haim died of an apparent drug overdose, his autopsy has been completed.

A source at the L.A. Coroners office tells exclusively that given the circumstances of the child actor’s death, the coroner is deferring his official ruling pending toxicology reports. They should be available in 4 – 5 weeks.

According to the source, four different types of prescription drugs were found at the scene. Visit RadarOnline to find out what the four drugs were.

It was also announced on Thursday that Haim’s funeral will take place in his native Toronto, where he will also be buried. Haim’s agent told ET a memorial will take place in Los Angeles.

UPDATE: Corey Haim’s mother has told Access Hollywood that the L.A. Coroners Office called and said that the autopsy shows Corey had an enlarged heart and his lungs were filled with water. She says he died of pulmonary congestion.