Arsonists are thought to have set fire to bins outside a block of flats repeatedly in the last year.
Firefighters from Sutton were called to flats at the junction of Thicket Road and Montpelier Road shortly before 11pm yesterday because a dumpster in a bin store was ablaze.
The crew used a hose to put the flames out. A spokesman said: "It could have been started deliberately - we've been called to that same bin shed three or four times recently."
If you have any information you can call police on 101 or the charity Crimestoppers ion 0800 555 111.
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