Firefighters have brought a blaze under control that started above a group of shops in Melbourne's busy Chapel Street.
An explosion was heard in a beauty salon on the second level of a group of shops before the fire grew quickly and damaged surrounding shops around 3.15pm, MFB Commander Darren Conlin told Fairfax Radio.
People were inside the second-storey Chapel Street salon when the fire began but nobody was hurt, he said.
Firefighters also battled to save Caffe Sienna Ristorante, near Barry Street, which was on the ground level, the spokesman said.
About 15 MFB units and 45 crew members responded to the call.
Firefighters are expected to remain at the scene into the evening.
VicRoads says Chapel Street is closed between Commercial Road and Toorak Road and delays are expected.
Trams were disrupted both directions. But trams on routes 6, 8 and 72 are expected to resume soon.
A shuttle service is operating on either side of the affected area for route 78.
Police expect the road to be closed until about 7.30pm.