Kimi Raikkonen said he suffered "a series of setbacks" during Friday practice for the Belgian Grand Prix.

Although Raikkonen was fifth fastest in FP1, he revealed that a brake problem had hampered his running. With an electrical problem also hitting Raikkonen in the afternoon session he conceded Ferrari had not been able to complete all of its schedule and will be left with additional work to carry out during FP3.

"A difficult day, complicated by a series of setbacks which cost us valuable track time," Raikkonen said. "In the morning, I had a brake problem, but once it was sorted, we were able to get through our planned programme for the first session.

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"The new components we brought for this race seem to be working, but only after we have cross-referenced all the data will we be able to work out what is the best package to use for the rest of the weekend.

"In the afternoon, an electrical problem complicated our work, preventing us from carrying out the race simulation. Tomorrow, we can expect a busy free practice session, in which we will do our best to prepare the car for qualifying and the race."