Police are investigating a series of arsons across Christchurch over the last fortnight, but have denied that a serial firebug is behind the blazes.
Investigations are continuing into a fire that razed to the ground the historic Canterbury Rowing Club's boat shed at Kerrs Reach, Wainoni, on Saturday.
The blaze - which destroyed hundreds of thousands of dollars worth of rowing equipment - came after fires at three nearby educational facilities over the previous weekend.
Police and Fire Service investigators are treating the boat shed fire as arson and are appealing for witnesses.
But they don't believe there is a link with those fires in the eastern suburbs with a series of fires in the central city last Sunday, which they did accept could be the work of "a single individual or group".