Taylor Hawkins had traces of 10 different drugs in his body when he tragically died, according to Colombian officials.
The Foo Fighters drummer, 50, is believed to have suffered a suspected heart attack, according to health chiefs in Bogota, which is likely to have been due to an overdose.
In an official statement following an initial autopsy, Colombia's state prosecution service confirmed that 10 types of substances, including marihuana and tricyclic antidepressants, had been found in toxicology tests.
They added that further studies needed to be done to clarify the facts in Mr Hawkins' death.
The statement read: "Colombia’s Attorney General’s Office can confirm the following after the initial autopsy on the body of Taylor Hawkins:
"1) That in the toxicology test on Taylor Hawkins’ urine 10 types of substances were preliminarily found, including marihuana, tricyclic antidepressants, benzodiazepines, and opioids.
"2) The National Institute of Forensic Medicine is continuing its medical studies to be able to completely clarify the facts that led to Taylor Hawkins death.
"3) Colombia’s Attorney General’s Office will continue with the investigation and reveal the results obtained as part of this investigation as appropriate."
It comes after the City Health Department announced in a statement earlier today that Mr Hawkins had suffered "chest pains" which sparked a medical emergency.
They confirmed that an ambulance had been called to the scene, but a mobile response unit from EMI was already at the scene, with a health professional dealing with the emergency.
While attempts had been made to revive Hawkins, he was pronounced dead at the scene.
The statement read: "With regards to the death of the American musician Taylor Hawkins in the neighbourhood of Chapinero, which happened on Friday night, the City Health Department states the following:
“The city’s Emergency Regulation Centre received an alert about a patient with chest pain in a hotel located in the north of the city.
“An ambulance was sent to attend to this case. However when the health department teams arrived, they found a mobile response unit from the company EMI at the scene.
“The health professional that was dealing with the emergency indicated attempts to revive the patient had been carried out but there had been no response and the patient was pronounced dead.
“The relevant authorities removed the body and started work on the investigations required as part of these types of incidents.
“We regret the death of this talented and world-famous drummer and send a message of condolences to his family, bandmates and fans.”
The statement made no mention of drugs, despite the fact police had alluded to Mr Hawkins’ death possibly being drug-related earlier in the day.
Local reports had already referred to hotel staff at Casa Medina, the luxury hotel Taylor was staying at, calling in emergency responders after the drummer suffered chest pains.
The Metropolitan Police of Bogota, in comments carried by several Colombian newspapers, said before the official statement put out by the health department: “The cause of death has yet to be established.
“According to those close to him, the death could be related to the consumption of drugs."
Colombian authorities are already said to have interviewed the musician’s manager and security personnel.
Investigators have reportedly requested CCTV footage from inside the hotel.
