Smoke in cabin of IB-6012

An Iberia Airbus A330-200, registration EC-MIL performing flight IB-6012 from Montevideo (Uruguay) to Madrid,SP (Spain) with 253 passengers, was enroute at FL370 about 340nm westsouthwest of Fortaleza,CE (Brazil) when smoke was observed from the crew rest area/lavatory prompting the crew to divert to Fortaleza. The aircraft landed safely on Fortaleza’s runway 13, however, the left hand brakes overheated. The passengers disembarked normally.
The aircraft is still on the ground in Fortaleza about 18 hours after landing.
The airline confirmed a technical problem causing smoke in the cabin. Maintenance is attempting to get the aircraft ready for a departure later on Apr 17th, if this turns out not possible, the airline is going to invoke the next best alternative solution for the passengers.
The Aviation Herald