An explosion at a drug lab hidden inside a Sydney granny flat has led to an arrest and charges.
Emergency services were called to the property at Sans Souci, in the city's south, about midday on October 26 after reports of a blast.
Police found the lab at the granny flat but were unable to find the missing male resident, who officers were told had fled the scene with a facial injury.
Investigators found a number of chemical substances inside the property as well as drug-manufacturing paraphernalia, police say.
A trail of blood was also visible on the tiled floor of the unit.
Specialist officers and a Fire and Rescue NSW hazardous materials crew were called in to dismantle the lab.
Police said 5kg of methamphetamine, known as the drug "ice", was seized as well as 12kg of the precursor drug ephedrine and other chemicals from the property.
Nearly a week after the bust, police arrested a 45-year-old man at Parramatta Police Station and charged him with four offences, including manufacturing a large quantity of a prohibited drug.
He was refused bail to appear at Parramatta Local Court on Thursday.
