Officials say the release of Whitney Houston’s full autopsy report may offer more clues about whether the singer suffered a heart attack before her drowning death.

Assistant Chief Coroner Ed Winter says details in the report, which is being compiled, may include test results and physical descriptions of the singer’s heart that will show whether she suffered a heart attack.

Houston’s death has been ruled an accidental drowning, with heart disease and cocaine use listed as contributing factors.

The report, which will likely be released in a few weeks, will reveal the levels of cocaine and its byproducts that were found in the singer’s system when she died on Feb. 11.

Beverly Hills police, who investigated the Grammy winner’s death, will use the coroner’s full findings to complete its investigation.