Burned man wanted after Syd meth lab fire

Perry Duffin
AAP

A man with facial burns is being hunted by authorities after an explosion exposed a clandestine drug lab and $30 million of ice in a Sydney unit.

Firefighters raced to a residential unit on Hazelwood Place at Epping around midday on Monday after a fire alarm was triggered and found the clandestine laboratory, police said.

Hazmat firefighters and police drug teams began dismantling the lab while about 20 people from neighbouring units were evacuated.

Detectives seized more than 60 kilograms of a crystalline substance, believed to be methylamphetamine, with an estimated street value of more $30 million.

Police are now searching for a man with a solid build, aged between 20 and 30 with a tanned complexion, who is believed to have been near the unit just before emergency services arrived.

He may have sustained facial burns in the blast, Police Superintendent John Duncan said.

"For us, this is a reminder of the dangers such laboratories in residential areas," Supt Duncan told reporters in Sydney on Wednesday.

"In this case the lab caught fire, these labs have been known to explode and pose a serious risk to the community."

Supt Duncan urged members of the public to remain vigilant for the signs of a drug lab - toxic smells, the scent of acetone, chemical drums and suspicious people in their community.