Alarming discovery inside suburban granny flat after explosion

A man has been charged with a host of serious drug offences after a midday "explosion" led police to an undercover drug lab hidden within a suburban granny flat.

NSW Police were called to Sans Souci, in Sydney's south, at 12pm on Wednesday after residents reported hearing a large blast. On arrival, detectives found equipment used for the production of narcotics scattered throughout every room in the granny flat.

Alleged offender flees on foot while injured

Officers were told the occupant of the granny flat, a man aged 45, had allegedly fled on foot with injuries to his face. Police established a perimeter around the scene, and although PolAir and the dog squad were called in, the alleged offender could not immediately be found.

The NSW Drug and Firearms Squad Chemical Operations Unit, Technical and Forensic Support Unit, and Fire & Rescue NSW HAZMAT team were then called in to safely dismantle the lab.

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Large quantities of drugs allegedly found

"A total of 5kg of methylamphetamine, 12kg of ephedrine and other chemicals consistent with the manufacture of prohibited drugs were located and seized to undergo further forensic examination," NSW Police said in a statement.

Following further inquiries, the 45-year-old was arrested at Parramatta Police Station and subsequently charged with four offences including manufacturing a prohibited drug, possession of a large commercial quantity, two counts of supply of a large commercial quantity and possession of a prohibited drug.

The man was refused bail and will appear before Parramatta Local Court later today.

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