A speed camera at Wayville has been targeted by an arsonist not once, but twice overnight.
The 40-year-old from Reynella was cuffed at around 4am after returning to the scene of an earlier fire he allegedly sparked on Greenhill Road just before 12.30am.
Police say he was trying to re-light the same camera where the first fire was extinguished by crews and arrested him on the spot.
He's been charged with two counts of arson and is expected to face court today.
It's understood his vehicle is being forensically examined.
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