After climbing 1.3% on Fed announcement yesterday, FTSE 100 index fell back 0.6% on Friday, pushed down by Greek inability to reach agreement on its debt write-off amid weaker US housing sales data. Eight out of ten sectors posted losses during the session, driven by energy and telecom shares. BP Plc. lost 2.2%, after the court said the company cannot acquire part of clean-up costs from Transocean Ltd. At the moment of writing FTSE 100 index is 0.45% or 26.03 points down at 5,769.33.